GTK warnings about a button's minimum width and height being negative values on startup

[nekohayo]

With the git master version, on every startup, I immediately get these two warnings:

Gtk-WARNING **: GtkButton 0x558488fe5f60 (button) reported min width -184, but sizes must be >= 0
Gtk-WARNING **: GtkButton 0x558488fe5f60 (button) reported min height -176, but sizes must be >= 0

While the app does not crash or misbehave, maybe this could bite us someday.

Doing a git grep width | grep min | grep button, the only results are all from GTG/gtk/browser/adaptive_button.py, so maybe that one is the culprit (it would make intuitive sense that it would be, at least)...

[gycsaba96]

Doing a git grep width | grep min | grep button, the only results are all from GTG/gtk/browser/adaptive_button.py, so maybe that one is the culprit (it would make intuitive sense that it would be, at least)...

This warning is generated by a dummy button in the sidebar. It was introduced as a simple fix to some very annoying bugs in PR #1095. It has negative dimensions intentionally to keep it invisible.

Nevertheless, more elegant solutions are still welcome. :)