I just updated to the new 2.10.38 and now my tool box disappears every time I click on my image. Every time now I have to go to windows, dockable dialogs, tool options and it comes back but only until I click on the image. To have to do this every time now. It’s like putting your paint brush in a jar, closing the lid, painting then having to reopen the jar to put the brush in every time!
how do I uninstall this update??? i put a bug report in. I tried locking the dialog box. 
You should just be able to uninstall the program and redownload and install the previous version. Might be good to mention OS on your computer.
May be caused by corrupted configuration files.
I recommend you to delete your configuration files and re-install GIMP.
Thank you! It’s windows, microsoft 10. I did uninstall it and reinstalled. Same problem.
Thanks, I did uninstall and reinstalled gimp update. Same problem.
I thought this was gimp, but now I don’t think this is.
I just installed the 2.10.38 upgrade on Windows 11 and I can not replicate your problem unless you have unticked the single-window mode and then I can replicate your issue.
When you re-installed GIMP, did you delete configuration files under “C:\Users\ USERNAME \AppData\Roaming\GIMP\2.10” folder?
I haven’t used GIMP in a while and am having the exact same problem. The toolbox disappears when I click on the image. I’m using Windows OS 11. I clicked on Windows=>Single window mode. I get panels on both the left and right sides. On the left, where once was the toolbox, are now icons of the tools at the top, and below that selections ‘Device Status’, ‘Undo History’, and ‘Images’. I’m looking for the options to change the size of the clone tool or the way to select the hardness of the brush. They were there the last time I used it but now they’re gone
You can put it back where it belongs: Getting the Tool options back, once for all