Created attachment 136728 [details] digitalclock applets SUMMARY The applet is smaller when it's in the system tray than when it's outside of it. Before Plasma 5.21, the applet sizes were the same. SOFTWARE/OS VERSIONS Linux/KDE Plasma: KDE neon 5.21 User Edition / X11 KDE Plasma Version: 5.21.2 KDE Frameworks Version: 5.80.0 Qt Version: 5.15.2
Created attachment 136729 [details] Before Plasma 5.21
There is some place in the panel that has enlarged margins. I just dragged the system tray and digital clock out of this place and removed the margins separator, and now everything looks the way I like it. So I close this issue.