I've been trying to use the themes options in QGIS.
In the window mode they work just quite well and layer format changes.
But when I go to the layout print menu the themes show up but it keeps defaulting back to the first theme.
My question is, Is there a way to different themes in the layout window or have I missed a step.
I suspect it's a bug in QGIS - I'm using Version 3.10.