diff --git a/app/javascript/mastodon/components/autosuggest_textarea.js b/app/javascript/mastodon/components/autosuggest_textarea.js
index f3fb7fa8b..5cad43e82 100644
--- a/app/javascript/mastodon/components/autosuggest_textarea.js
+++ b/app/javascript/mastodon/components/autosuggest_textarea.js
@@ -189,7 +189,7 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
   }
 
   render () {
-    const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus } = this.props;
+    const { value, suggestions, disabled, placeholder, onKeyUp, autoFocus, children } = this.props;
     const { suggestionsHidden } = this.state;
     const style = { direction: 'ltr' };
 
@@ -197,34 +197,38 @@ export default class AutosuggestTextarea extends ImmutablePureComponent {
       style.direction = 'rtl';
     }
 
-    return (
-      <div className='autosuggest-textarea'>
-        <label>
-          <span style={{ display: 'none' }}>{placeholder}</span>
-
-          <Textarea
-            inputRef={this.setTextarea}
-            className='autosuggest-textarea__textarea'
-            disabled={disabled}
-            placeholder={placeholder}
-            autoFocus={autoFocus}
-            value={value}
-            onChange={this.onChange}
-            onKeyDown={this.onKeyDown}
-            onKeyUp={onKeyUp}
-            onFocus={this.onFocus}
-            onBlur={this.onBlur}
-            onPaste={this.onPaste}
-            style={style}
-            aria-autocomplete='list'
-          />
-        </label>
+    return [
+      <div className='compose-form__autosuggest-wrapper'>
+        <div className='autosuggest-textarea'>
+          <label>
+            <span style={{ display: 'none' }}>{placeholder}</span>
 
+            <Textarea
+              inputRef={this.setTextarea}
+              className='autosuggest-textarea__textarea'
+              disabled={disabled}
+              placeholder={placeholder}
+              autoFocus={autoFocus}
+              value={value}
+              onChange={this.onChange}
+              onKeyDown={this.onKeyDown}
+              onKeyUp={onKeyUp}
+              onFocus={this.onFocus}
+              onBlur={this.onBlur}
+              onPaste={this.onPaste}
+              style={style}
+              aria-autocomplete='list'
+            />
+          </label>
+        </div>
+        {children}
+      </div>,
+      <div className='autosuggest-textarea__suggestions-wrapper'>
         <div className={`autosuggest-textarea__suggestions ${suggestionsHidden || suggestions.isEmpty() ? '' : 'autosuggest-textarea__suggestions--visible'}`}>
           {suggestions.map(this.renderSuggestion)}
         </div>
-      </div>
-    );
+      </div>,
+    ];
   }
 
 }
diff --git a/app/javascript/mastodon/features/compose/components/compose_form.js b/app/javascript/mastodon/features/compose/components/compose_form.js
index cf82ef5a8..eff193929 100644
--- a/app/javascript/mastodon/features/compose/components/compose_form.js
+++ b/app/javascript/mastodon/features/compose/components/compose_form.js
@@ -200,29 +200,29 @@ class ComposeForm extends ImmutablePureComponent {
           />
         </div>
 
-        <div className='compose-form__autosuggest-wrapper'>
-          <AutosuggestTextarea
-            ref={this.setAutosuggestTextarea}
-            placeholder={intl.formatMessage(messages.placeholder)}
-            disabled={disabled}
-            value={this.props.text}
-            onChange={this.handleChange}
-            suggestions={this.props.suggestions}
-            onKeyDown={this.handleKeyDown}
-            onSuggestionsFetchRequested={this.onSuggestionsFetchRequested}
-            onSuggestionsClearRequested={this.onSuggestionsClearRequested}
-            onSuggestionSelected={this.onSuggestionSelected}
-            onPaste={onPaste}
-            autoFocus={!showSearch && !isMobile(window.innerWidth)}
-          />
-
+        <div className='emoji-picker-wrapper'>
           <EmojiPickerDropdown onPickEmoji={this.handleEmojiPick} />
         </div>
 
-        <div className='compose-form__modifiers'>
-          <UploadFormContainer />
-          <PollFormContainer />
-        </div>
+        <AutosuggestTextarea
+          ref={this.setAutosuggestTextarea}
+          placeholder={intl.formatMessage(messages.placeholder)}
+          disabled={disabled}
+          value={this.props.text}
+          onChange={this.handleChange}
+          suggestions={this.props.suggestions}
+          onKeyDown={this.handleKeyDown}
+          onSuggestionsFetchRequested={this.onSuggestionsFetchRequested}
+          onSuggestionsClearRequested={this.onSuggestionsClearRequested}
+          onSuggestionSelected={this.onSuggestionSelected}
+          onPaste={onPaste}
+          autoFocus={!showSearch && !isMobile(window.innerWidth)}
+        >
+          <div className='compose-form__modifiers'>
+            <UploadFormContainer />
+            <PollFormContainer />
+          </div>
+        </AutosuggestTextarea>
 
         <div className='compose-form__buttons-wrapper'>
           <div className='compose-form__buttons'>
diff --git a/app/javascript/mastodon/features/ui/components/compose_panel.js b/app/javascript/mastodon/features/ui/components/compose_panel.js
index c456a6400..a05fbbe39 100644
--- a/app/javascript/mastodon/features/ui/components/compose_panel.js
+++ b/app/javascript/mastodon/features/ui/components/compose_panel.js
@@ -9,9 +9,6 @@ const ComposePanel = () => (
     <SearchContainer openInRoute />
     <NavigationContainer />
     <ComposeFormContainer />
-
-    <div className='flex-spacer' />
-
     <LinkFooter withHotkeys />
   </div>
 );
diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index e234c39e1..569ccd33d 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -333,14 +333,15 @@
     }
   }
 
+  .emoji-picker-dropdown {
+    position: absolute;
+    top: 5px;
+    right: 5px;
+    z-index: 1;
+  }
+
   .compose-form__autosuggest-wrapper {
     position: relative;
-
-    .emoji-picker-dropdown {
-      position: absolute;
-      right: 5px;
-      top: 5px;
-    }
   }
 
   .autosuggest-textarea,
@@ -355,7 +356,8 @@
     opacity: 0.0;
 
     &.spoiler-input--visible {
-      height: 47px;
+      height: 36px;
+      margin-bottom: 11px;
       opacity: 1.0;
     }
   }
@@ -406,6 +408,12 @@
     }
   }
 
+  .emoji-picker-wrapper,
+  .autosuggest-textarea__suggestions-wrapper {
+    position: relative;
+    height: 0;
+  }
+
   .autosuggest-textarea__suggestions {
     box-sizing: border-box;
     display: none;
@@ -566,6 +574,7 @@
     border-radius: 0 0 4px 4px;
     display: flex;
     justify-content: space-between;
+    flex: 0 0 auto;
 
     .compose-form__buttons {
       display: flex;
@@ -614,6 +623,7 @@
     display: flex;
     justify-content: flex-end;
     min-width: 0;
+    flex: 0 0 auto;
 
     .compose-form__publish-button-wrapper {
       overflow: hidden;
@@ -644,6 +654,9 @@
   margin-bottom: 10px;
   background: $ui-primary-color;
   padding: 10px;
+  min-height: 23px;
+  overflow-y: auto;
+  flex: 0 2 auto;
 }
 
 .reply-indicator__header {
@@ -2184,7 +2197,8 @@ a.account__display-name {
   margin-top: 10px;
   display: flex;
   flex-direction: column;
-  height: 100%;
+  height: calc(100% - 10px);
+  overflow-y: hidden;
 
   .search__input {
     line-height: 18px;
@@ -2200,14 +2214,33 @@ a.account__display-name {
   .navigation-bar {
     padding-top: 20px;
     padding-bottom: 20px;
+    flex: 0 1 48px;
+    min-height: 20px;
   }
 
   .flex-spacer {
     background: transparent;
   }
 
+  .compose-form {
+    flex: 1;
+    overflow-y: hidden;
+    display: flex;
+    flex-direction: column;
+    min-height: 310px;
+    padding-bottom: 71px;
+    margin-bottom: -71px;
+  }
+
+  .compose-form__autosuggest-wrapper {
+    overflow-y: auto;
+    background-color: $white;
+    border-radius: 4px 4px 0 0;
+    flex: 0 1 auto;
+  }
+
   .autosuggest-textarea__textarea {
-    max-height: 200px;
+    overflow-y: hidden;
   }
 
   .compose-form__upload-thumbnail {
@@ -2217,6 +2250,9 @@ a.account__display-name {
 
 .navigation-panel {
   margin-top: 10px;
+  margin-bottom: 10px;
+  height: calc(100% - 20px);
+  overflow-y: auto;
 
   hr {
     border: 0;