when you configure a lower hight than 34 on the desktop panel so then it comes to resize the Chrome icon to tiny 22 or 16? don't know, while other icons still stay larger, the problem is that the Chrome icon at the same time becomes black and so it becomes invisible in dark panels. I have checked with several alternative icon sets but it is all the same result, Chrome icon becomes black
Have you got a full scenario for reproducing this? What packages installed, what configuration changes, and what steps from a just-started desktop? It's otherwise a lot of variables that need chasing just to see the problem.
(In reply to Adriaan de Groot from comment #1) I see, sure I have, one example in which you can change the components as you wish as long as the panel is dark colored Oxygen as global theme application style doesn't matter Plasma Style ANY Colors Breeze, Breeze dark, probably any other as well Windows decoration ANY Fonts ANY Plasma 5.22.5 Freebsd 13 kernel 13 Stable behavior is with the Chrome Icon and Oxygen Theme, seems that Chromium use its own ICON and not any from the Icon set which is chosen, I tried several Breeze, Breeze dark, Oxygen and Oxygen dark, no change once having set your desktop details and installed Chromium, just push the Chromium Icon on to the Panel and resize the panel hight to 34 or 32 to see it happen thanks
the problem persist after some chrome upgrades as well kde upgrades Chrome is now at 94.0.4606.81 Plasma at 5.22.5 I can change between Classic and GTK+ theme, with KDE's browserintegrations enabled but the icon does not change the color in any combination same versions on Linux do not have this problem