Firefox 131.0.2 doesn't show a link's destination on mouse hover

[RalphCorderoy]

Hi, I'm using Firefox 131.0.2 on Linux x86_64 having upgraded to it from 131.0. Since the upgrade, moving the mouse over a link no longer shows the link's destination in a rectangle in the bottom-left corner of the web page which overlays the page's content. I've tried `--safe-mode` but it makes no difference. I often used the displayed destination to judge whether to click on a link. A new's story's title might be deliberately vague but the slug has the specifics, e.g. location, which means I know I'm not interested. A site's domain may tell me I don't want to visit. Without knowing the link's destination, many clicks are more risky. Are others seeing this with 131.0.2? Cheers, Ralph.

[wobe]

I had the same problem since 131.0.1, turns out the unsupported compact mode (browser.compactmode.show) was the culprit. Setting the browsers Density mode (right click next to urlbar > Customise toolbar > Density dropdown in bottom of the screen) to Normal, and then back to Compact (Unsupported) fixed the issue for me.

[RalphCorderoy]

Thanks @wobe, I'll bear that in mind should it happen again. Stopping and starting Firefox fixed it. I wonder if changing the Density mode has a side effect of fixing it due to some knock-on update to the display rather than being the direct cause.

[RalphCorderoy]

The problem happened again so I tried @wobe's suggestion and the destinations started to appear again on switching from Compact to Normal density. They kept appearing after switching back to Compact so I closed the 'Customise toolbar' tab. It was soon apparent that the destinations had stopped appearing again. This second time, the density change didn't fix things so I'm about to quit and start Firefox instead.

[RalphCorderoy]

I figured out what's happening: when the problem occurs the window is taller than the screen and the bottom of the window is off the bottom of the screen. Thus the pop-up rectangle which gives the state of page loading, and the destination of the link being hovered over is off the bottom of the screen. Why Firefox sometimes starts taller than the screen rather than the screen height is unclear. Stopping and starting Firefox often returns it to being full screen height. To check the window extends below the bottom of the screen, drag the page's scrollbar down and see if the semicircular end of the bottom of the scrollbar's thumb disappears or remains visible.