DS 4.12 Beta keeps changing the layout

I have a preferred custom layout, but lately DS 4.12 Beta has taken to changing it without warning, often several times a session. This is getting to be a real nuicance, so I'd like to know if there's a way to lock in my custom layout so DS won't reset it.
Any advice would be appreciated.
Comments
What is it doing - changing panes, tool bars, menus, all of them? Do you have activity tabs (Posing etc.) across the top?
The screenshots tell the story: buttons shifted to the left instead of where I'm used to seeing them, and if I'm in Iray preview mode it reverts to Texture shaded. Plus I lose whatever content search results I had going.
After a little experimenting I've found that it happens when I minimize DS and open something else. When I resume my session I have to re-load my saved layout and reconstruct what I was doing. It's not a big screaming deal, but as I said in my OP, it is a nuisance (spelled it correctly this time) and I don't recall having this problem with 4.10 or 4.11 Beta.
I can't check that just now, but if it's reproducible I'd think it was worth reporting https://www.daz3d.com/help/help-contact-us
The icon shifting thing happens to me as well sometimes when i switch back and forth between my browser and DS i.e.
It´s not only restricted to the 4.12 version. I allready had these issues with 4.10 and 4.11.
But my iray preview never reverted back to texture shaded.
My mistake. The reversion and loss of search results happen when I'm forced to reload my custom workspace, which is Texture Shaded by default. Also, whatever camera view I was using to frame the scene reverts to the Default Camera view.
I'll submit a bug report.
That's to be expected as those are saved with the layout - for the preview mode you could always sitch and save a new layout.
Thanks, Richard. I understand that's to be expected, but resuming a session to find the buttons aren't where I expect to find them is something of a p.i.t.a. It's an even bigger pain if I've done a content search in Iray preview mode and resetting the workspace loses the search results. The new search takes forever because a big scene in Iray preview mode will flush the disk buffer.
The interface doesn't reset when I hit the 'Minimize' button during a render, so there doesn't seem to be any reason why it should reset when I minimize the window manually (i.e. using the minus-button thingy in the top right hand corner. Oh well, maybe DAZ 3D's development team will find an easy fix...or decide the problem is too trivial to bother with.
Yeah I've long had this issue with the top bar icons shifting or, rather, bunching up (any spaces between groups of icons get removed). I've discovered that, in 4.11 at least, if I go into Customize Workspace and just hit Accept it will put the icons back where they were. But it is very annoying.
Yep works for me as well. In facts that´s what i do every time when this happens. It´s kind of a workaround but as you said, still annoying.