Created attachment 142301 [details]
Screenshot with the default settings window size

SUMMARY
By default, the content of the connections settings will not fit in the window area, but instead be cut of to the right.

STEPS TO REPRODUCE
1. Open System Settings
2. Resize the window to the smallest size (as it is by default)
3. Navigate to the Connections KCM

OBSERVED RESULT
The content is too wide and gets cut off to the right

EXPECTED RESULT
The content scales to fit entirely within the window

SOFTWARE/OS VERSIONS
OS: KDE neon Testing Edition
KDE Plasma Version: 5.23.0
KDE Frameworks Version: 5.88.0
Qt Version: 5.15.3

ADDITIONAL INFORMATION
Compared to other KCMs, the padding seems wider. The network list also doesn't scale. I would guess that addressing those two could help solve the issue.