Gnome terminal scrollbar - hover changes width & wraps text

I'm using Gnome Terminal (under KDE, but I'm not sure if that's important), and when I hover my mouse over the scrollbar, the scrollbar gets wider and causes the text to wrap. Here's a GIF:

It's like the terminal is not leaving enough space for the expanded scrollbar, so the text area gets narrower when you hover over the scrollbar.

Update: I'm not sure this works consistently... it maybe works with top, as top dynamically redraws when the width changes, but doesn't seem to work if it's just text on the terminal. 😐 Results vary.

Workaround

I've found an odd workaround: Under Edit -> Preferences (Profile Preferences) -> Scrolling, if you disable "Show scrollbar", and then re-enable, it works! The scrollbar no longer causes the text to wrap.

This seems to have fixed all instances of Gnome Terminal - though I'm guessing I'll have to do this again next time I reboot.