Column selection popup cutoff and cannot be closed

[nicolajb23]

Describe the bug
Using a data grid with columns that can be hidden. The column selection popup is cutoff at the top of the data grid and will not close.

To Reproduce
Steps to reproduce the behavior:

1. Create data grid with CanHide="true" for several columns
2. Have a collection with very few rows (i.e. mine has 1 at the moment)
3. Click the column selector button
4. See error

Environment

• Blazority Version 0.9.4

[karan-kang]

Fixed in v0.9.5