Portal 2 Bug: Portalgun hold animation can be broken thanks other weapon

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Describe the bug

In Portal 2 portalgun hold animation can be broken thanks other weapon, it's also can glitch the hold sounds. This can be achieved in 3 ways.

First way: hold something thanks portalgun, use other weapon (can be achieved with bug_swap, phys_swap, lastinv, use weapon_name).

https://github.com/StrataSource/Portal-2-Community-Edition/assets/103366204/b10c21e5-5c6d-4de6-9a6b-659e57837ade

Second way: hold something thanks portalgun, pick up weapon that have higher priority than portalgun.

https://github.com/StrataSource/Portal-2-Community-Edition/assets/103366204/f4daa8e1-939f-404e-be91-b7cda49799dc

Third way: hold something with any weapon (it's not should be portalgun), save and load.

https://github.com/StrataSource/Portal-2-Community-Edition/assets/103366204/1613d73b-1536-4442-a750-3ca183410ef3

This all also relevant to Portal, where this problem meeting regularly in mods that use Half Life 2 weapons. This problems still in P2CE. Should be fixed because of Half Life 2 weapons support and opportunity to add custom weapons. It's should often meeting now.

To Reproduce

1. Open any map.
2. Repeat the ways from the description.

Operating System

Any.

[MyGamepedia]

I only now saw that I mixed up the videos and the way, fixed.