title: Ctrl+. (Dot) makes "e" appear instead of showing suggestions in VSCode on Gnome
body: <p>I'm using VSCode on Gnome (on XOrg on Arch). Since lately, the shortcut <code>Ctrl+.</code> stopped working, despite still being listed in the keyboard shortcuts and despite all extensions being disabled. Instead, an underlined <code>e</code> appears:</p>
  <p><a href="https://i.stack.imgur.com/iXMeQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/iXMeQ.png" alt="enter image description here" /></a></p>
  <p>The character goes away when pressing enter twice or ESC once. When writing something and then pressing enter, the <code>e</code> goes away but the written text stays. When changing the window while the <code>e</code> is underlined, it becomes a regular <code>e</code>.</p>
  <p>This seems to behave somewhat similarly to the compose key, which displays an underlined centered dot after being pressed.</p>
  <p>I can't find any keyboard shortcuts for <code>Ctrl+.</code> in the Gnome settings.</p>
  <p>What is this feature? What is it good for? And how can I restore the original behavior?</p>