Resize of text entry box
Since GNOME 3.34 the first character I type into the password field of GDM resizes the entry and makes it a tiny bit higher. The same happens inside GNOME-Shell, when I use Alt+F2 or when Seahorse asks for a password. If I'm right, all this are provided by Clutter and not Gtk? Clutter didn't received any update for long time, so I don't know what causes this actually. My next suspect would be PANGO.
I'm aware that it is barely noticeable (I suggest GIMP to compare the high of the entry field), but during interactive usage you recognize it immediately. I'm using Archlinux with Wayland, it happens also with X11, on a ThinkPad X220 and a ThinkPad T420 with Intel SandyBridge/HD3000 and xf86-video-intel. Thank you