Your UI wastes a lot of space.

[ewtoombs]

Your UI wastes a lot of space, making it hard to read when the browser window's width is small.

Here's what I did to fix this:
https://greasyfork.org/en/scripts/429321-element-io-width/code

[t3chguy]

Duplicate of #6488

[t3chguy]

.mx_LeftPanel .mx_LeftPanel_GroupFilterPanelContainer {
    display: none;
  }

this is completely redundant, there's a setting to hide that panel.

[ewtoombs]

Yeah, so nobody has any idea what the "Community Filter Panel" is. And why isn't it under "Appearance"? And what is the rationale of Settings > Preferences? Preferences are settings. It should be called Misc or something.