The layout of the main toolbar items (toggle pro-mode, serial monitor) is broken

[kittaakos]

Describe the bug
Refer to the bug title and see the attached screencast:

Desktop:

• OS: all
• Version: from source, HEAD

[jbicker]

There is space reserved for the labels which are shown on hovering a button. That's why the toolbar does not get smaller. So it is not really broken.
Any suggestions how we should proceed with that?

[per1234]

I think this no longer occurs due to the provisional workaround described in #96 (comment), but will probably come back if a "proper" fix is found for that and the minimum window size is made more reasonable.

[per1234]

if a "proper" fix is found for that and the minimum window size is made more reasonable.

This has happened: #243

[per1234]

Closing as resolved by #1151