There is a very old and well known bug that allows you to boost players through ceilings, you can even "skywalk" on some maps. I think this is caused by the crouching mechanism.
Here is a youtube video on de_dust: https://www.youtube.com/watch?v=MqRgXaavhc0
Moved to https://github.com/ValveSoftware/halflife/issues/392
Nothing extracted yet.
There is a very old and well known bug that allows you to boost players through ceilings, you can even "skywalk" on some maps. I think this is caused by the crouching mechanism.
Here is a youtube video on de_dust:
https://www.youtube.com/watch?v=MqRgXaavhc0