How to fix this brush that only appears when playing ?

[O&O]YaBoiDucki

L1: Registered
Jun 14, 2020
6
0
Hello, I'm new to map making, I have an issue where a brush I don't remember adding appears when play testing on the map but not on the edditors (as the screen shot proves it, the brush i'm talking about is the very thin brush i'm looking at in the two other screenshot), could someone please help me out ? thanks alot.
 

Attachments

  • bugged.png
    bugged.png
    570.8 KB · Views: 174
  • 20200614122437_1.jpg
    20200614122437_1.jpg
    262.1 KB · Views: 178
  • 20200614122431_1.jpg
    20200614122431_1.jpg
    272.4 KB · Views: 154

Pinsplash

bad bad bad
May 8, 2016
156
71
It's the result of a brush having something about it messed up. Make sure none of your brushes have concave parts and that all the points of their sides are coplanar (not ambiguous in any way).
 
Oct 6, 2008
1,948
446
you can also do

sv_cheats 1
mat_wireframe 3

and then see the dimensions of the box and where they are coming from which you then look for in hammer