Hi
 it's possible for me
I've the problem  since years (> 6 ) on 2 computers (on  docking station) having the configuration  with two screens : one is that one of the laptop and one outside both having not the same resolution !
If necessary I can find out all situation scrambling the Icons like unhanging the laptop from the docking station  or trying to manage the situation with xrandr  (terrific !) , give you the contents of plasma-org.kde.plasma.desktop-appletsrc and compare it to reality, or other things wanted if possible

I have a feeling that the positioner works only properly with left-to-right ordering and left alignment.

Then there's also still the issue that panels will resize the folder containment when they appear. This can cause issues with positioning, and the folder containment should load after all the panels (or panels should not be able to push the containment at all, but this can cause desktop icons to go under the panels.)

(In reply to Akseli Lahtinen from comment #2)
> Then there's also still the issue that panels will resize the folder
> containment when they appear. This can cause issues with positioning, and
> the folder containment should load after all the panels (or panels should
> not be able to push the containment at all, but this can cause desktop icons
> to go under the panels.)

In my experience this happens with a left panel (my daily driver) but not a bottom panel when I tried that for a few days to see if it helped. No randomly-moving icons with a bottom panel! Both are 50 px thick.

I couldn't reproduce the issue after trying with all kinds of panels and changing the display resolution.

Could it be affected by multimonitor?

I experience it with only a single monitor. Regardless, this is just the metabug. We should probably discuss this in a specific child report.

I didn't find a bug report for it, so I opened one: Bug 506638.

nk0885@yahoo.fr, please open a new bug report for your issue and then mark it as blocking this one. Thanks!