[Bug]: border disappears after toggling window to floating

[ghost]

Summary

I used "Toggle Active Window Floating" hotkey several times then the border disappeared forever.

https://user-images.githubusercontent.com/102739674/161059545-33342eb2-071a-405b-bac9-30062a13bd04.mp4

Steps to Reproduce

1. Open a window
2. meta+f to make the window floating
3. meta+f to make the window tiling
4. meta+f to make the window floating

Expected behavior

Border should exist

Screenshots

No response

Bismuth version

kwin-bismuth-3.0.0-1

KDE Plasma version

5.24.4

The platform KWin is running on

X11

Additional context

No response

[b1scu1t]

What is your current Window Decoration? IIRC, Bismuth's newly shipped Window Decoration has the Title Bar and Border disabled at all times. Switch to the Default Breeze/Oxygen Window Decoration and check the 'No borders around tiled windows' option in the 'Appearance' tab within 'Window Tiling' settings.

I cannot reproduce the problem. The borders automatically re-appear once I set the window to floating.

https://user-images.githubusercontent.com/41207956/161404215-7cdf41d2-0431-4263-8ae4-d8c5d341abfb.mp4

[ghost]

I found the source of the problem. Its because of "Maximize sole window". If i uncheck this, border works right way :

https://user-images.githubusercontent.com/102739674/161421171-c603a30a-2d80-42aa-8544-7c1defcdacd3.mp4

(for clarity: "No border around tiled windows" is unchecked here)

Also, "No border around tiled windows" works same way. If uncheck - works fine, but with the option there is also no border:

https://user-images.githubusercontent.com/102739674/161421179-79592168-9290-426f-b5e6-08dfe4640343.mp4

Everything is identical with the default breeze decoration.

[gpcureton]

I'm running version 3.1.0-1 (on Manjaro KDE), and if I start in any of the tiled layouts, toggling the Monocle layout kills the window decorations. This is the case for Breeze, and every other window decoration I have tried.