Timeline Zoom controls do not work properly

[ZMBrian]

I'm running Ubuntu 20.04 and Zoneminder 1.34.16 using 2 Hikvision cameras.

Timeline zoom controls work very inconsistently, if they work at all. Zooming in by clicking the background does not work at all until you scroll left or right, then the zoom will kick in, and it will be maximum zoom. Zooming out seems to be at extremely small steps, then it will stop zooming out completely (yet not to the point where you can see the whole timeline). It's hard to describe. Scrolling left and right appears to work properly.

This seems to be an issue when viewing a single camera's timeline and when viewing both cameras' timeline together.

Anyone else have this issue?

[JavaBen]

I have this issue as well. Usually, 'zoom in' (Click) usually works, but then zoom out (Ctrl Click) might do nothing.

[td]

Same here; 1.34.21 on openSUSE.

td