Taskbar misbehavior - icons out of horizontal alignment

My taskbar vanished, got it back by pulling it back up, but now it has this strange misbehavior:



Notice that the three system icons at the far left are at a lower horizontal level than the icons to their right, and are partly cut off at the bottom of the screen. Likewise, some of the icons on the far right are lower, and are cut off.

If I expand the taskbar up, it's as if the icons are on separate lines, like this:



Rebooting doesn't help. Removing and replacing my added Quick Start toolbar doesn't help. Locking/unlocking the taskbar doesn't help.

Is there a way to get all the toolbar icons back in horizontal alignment and not cut off? Thanks for any help!

Windows 10 Home v1903 18362.657 on Dell Inspiron 3670