The context was getting cleaned too often maybe.
This fix reverts one line from commit
https://gitlab.kitware.com/vtk/vtk/commit/
3a8e4497

This commit fixes issue

vtk/vtk#16876

and adds a test for that condition as well as
a few other cases that should work but could
cause problems.

This change could introduce other issues limited
to windows as the code is fairly complex and
the use cases vary widely. At some point the whole
process of creating windows and handling offscreen
drawing needs to be reworked. It is a mishmash of 20
years of code and overdue for a real workover for all
platforms. But this topic is intended to fix this one
case until we have time to really look at it and rework
it.

Currently the new test is only active for OpenGL2 and
Windows. OpenGL1 and other platforms has issues with
it that need to be fixed in the future. But for now this
change fixes the reported Windows issues and adds a
test to maintain that fix.