This could happen when e.g. overriding context with just the area.
Now add poll functions that check for an active region when running
operators that require a region.
The fix is similar to 72688791dc
Alternatively, we could have a fix similar to a8892c7264 (getting the
correct region from the area), this would require less setup by
scripters, however for some operators the usage of the region is a
little further down the line, so implementation would be a bit more
involved. Also: for some of the operators, this would have to be done in
both `invoke` and `exec` (so would be more duplicate code changes).
Philipp Oeser