Smooth scrolling setings do not stick

[Mr68360]

Running SlickEdit Pro 2021 (v26.0.1.0 64-bit Qt5)

When I set Options/Appearance/Scroll style/Smooth horizontal scroll (and vertical) to "ON", the setting remains for up to a day or so, but reverts to off.  I can't seem to correlate the un-set, but I inevitably notice it.  I tried not touching the options after I set them to ON; the settings still changed without my intervention.

I'll try to find an associated action, but for now they just revert from ON to OFF infrequently, but randomly.

[Dan]

Have you seen any Slick-C stacks?  There are some things that change this and change it back.

[Mr68360]

No stack popups.  No other problems editing, navigating, etc.  I just notice at one point arrow-cursoring up or down causes the "non-smooth jump," and the settings are set to OFF when I reopen the tools dialog.