[Bug] text box stays on screen after a wall is deleted or unselected

[tmcclintock]

Foundry 0.7.9
Wall height version 3.5.3.4 (most recent)
Running on Forge
Game system is PF2e

Description - The text window that shows the top and bottom heights does not disappear when it should.

Steps to reproduce:

1. Draw any wall
2. mouse-over an end point to make the text box appear on screen (by default it says T: inf \n B: inf)
3. left-click the end point (the text box should still be there
4. hit the "delete" key to delete the wall with the mouse still over the location of the end point. The text box remains after the wall is deleted, even after moving the mouse, navigating to other menus, etc.

Expected behavior:
The description text box should disappear when the wall is deleted.