You’re not alone. On my portable system, I’ve had no issues Whereas on my big system, I get strange resizing behaviors. I think it may be because on my portable system, I use the standard layout of Nuendo, where as on my other system, it is setup more like old versions of Nuendo in that there are individual windows for everything.
I feel your frustration. There are so many little bugs like this, where there workarounds, but just still annoying to have to workaround in the first place.