When maximizing an editor group and switching between groups, the focused group will maximize. After opening or closing the sidebar, the maximizing stops happening. I have had this happen on linux as well.
Version information
Version: 1.32.1
Commit: 05f146c
Date: 2019-03-08T00:15:00.418Z
Electron: 3.1.3
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Darwin x64 18.2.0
Steps to Reproduce:
- Open two tabs and place them in different editor groups
- Maximize editor group
- Switching between editor groups makes the focused group maximize
- Open sidebar
- Close sidebar
- Switching between editor groups doesn't maximize focused group.
Does this issue occur when all extensions are disabled?: Yes
Gif of bug:

When maximizing an editor group and switching between groups, the focused group will maximize. After opening or closing the sidebar, the maximizing stops happening. I have had this happen on linux as well.
Version information
Version: 1.32.1
Commit: 05f146c
Date: 2019-03-08T00:15:00.418Z
Electron: 3.1.3
Chrome: 66.0.3359.181
Node.js: 10.2.0
V8: 6.6.346.32
OS: Darwin x64 18.2.0
Steps to Reproduce:
Does this issue occur when all extensions are disabled?: Yes
Gif of bug: