Dear devs,

for a long time now I have a problem with the breadcrumb address bar. On the laptop I mostly use two-finger-scrolling on the touchpad. It works nicely in other applications, such as Okular or even Dolphin’s file view – albeit the latter is a little too fast.

When I try scrolling on a directory in the breadcrumbs address bar, either nothing happens at all (presumably because I move the fingers too slowly) or it jumps several directories at once. It is practically impossible to browse through directories in a controlled manner. My most often use case is to view several picture directories in succession in Gwenview.

When I decrease the scrolling distance in the Touchpad Settings to slow down scrolling and be less jumpy in general, then I can’t get the directory to change at all.

It is absolutely no problem when using a wheel mouse. The wheel produces discrete scroll events with one rotation index of the wheel, and I can move from one dir to the next very precisely.

STEPS TO REPRODUCE
1. Use a laptop with a touchpad
2. Open a file view with an address bar set to breadcrumbs style (e.g. Dolphin or Gwenview)
3. Open a directory that has sibling directories and move the mouse cursor over its entry in the address bar
4. Try scrolling with the touchpad

OBSERVED RESULT
Either nothing happens or it scrolls through too fast.

EXPECTED RESULT
It should be more easy to scroll through one directory at a time. Perhaps the trigger is based on some scroll event, that is only produced above a certain scrolling speed, but then in too large numbers. Maybe it should be triggered by scrolling distance instead. I must assume that touchpad scrolling works differently to mouse wheel scrolling. Otherwise the observed smooth movement in Okular wouldn’t be possible.

Thank you.

SOFTWARE/OS VERSIONS
KDE Frameworks 5.74.0
Qt 5.15.1
KDE Plasma 5.19.5