[BajaGringo]

The core software we built this website from is considered “responsive”
and uses an adaptive style framework when displaying forum discussions that
is supposed to automatically resize the frames and realign according to the text/media content displayed and your display width size, measured in pixels.

The developer has acknowledged receipt of the support ticket but has yet to respond. Based on what you just shared, I am going to go out on a limb and will wager that there are very small windows where this bug may happen, caused by a browser having an issue interpreting between predefined screen display steps in pixels from cell phones to tablet to PC.