Apologies, would you mind filing this here https://github.com/ValveSoftware/Source-1-Games/issues/ instead. We’re trying to keep all the source bugs in one place. Would you include a screenshot as well please - as I tried to reproduce with the elevator I thought you meant and cannot.
Nothing extracted yet.
In Testchamber 15 an energy ball activates an elevator causing it to lower. The elevator should raise after stepping onto it but it stays in the lowered position.
Tested with Gentoo Linux AMD64, Intel Core i7, Nvidia GTX 670.