Steps to reproduce:
- Place a brush (BSP Box / Brush actor) somewhere
- Make one side smaller, i.e. change the dimensions to 100,200,300 or resize it accordingly.
- Rotate it e.g. 90 degrees
- Clip off the bottom part of it.
Here’s an image showing the result of the steps above. These “phantom vertex points” are there if you deselect and reselect the brush too. http://i.imgur.com/YEroGRM.jpg
I’d bet the same bug happens with uniform brushes as well, just that you won’t notice it.
And another example where I tried to cut off the bottom part of some stairs. Can of course work around this by resizing each step manually, but that takes a lot more time.
Before the clip: http://i.imgur.com/bU8pV0r.jpg
After the clip: http://i.imgur.com/Vh6oMOL.jpg
How it should look (After resizing them manually): http://i.imgur.com/1v6uTh3.jpg
Off topic: Also please add a “are you sure you want to close this page” sort of popup if the text box has been edited…