Physcannon world physics
When the physcannon is dropped, the main origin is wrong, making it flop around and sometimes clip in to walls where clients cannot pick it back up. This is due to the file w_physics.phy located in synergy_pak.vpk/models/weapons/w_physics.phy If this file were replaced by the default HL2 w_physics.phy located in hl2_misc_dir.vpk/models/weapons/w_physics.phy it would be resolved. Not sure if removing the file from synergy_pak.vpk would work instead to allow the contentloader to load that file directly from HL2.
Edit: This is also relates to players sometimes not spawning with the physcannon, as it is actually dropped out of the world when clients respawn.
Edited by Balimbanana