[TF2] Orphaned weapon unusual particles flooding screen (with repro info)

[rabscootle]

REPRO INFO:

Repro video: https://www.youtube.com/watch?v=7x6cGcLR38c

1. Load into a map with sv_cheats set to '1'
2. Spawn in bot players ('tf_bot_add')
3. Enable friendly fire (mp_friendly_fire '1')
4. Die while holding out Unusual-quality weapon and spectate player in third-person view*
5. Kill player you are spectating (i.e. 'bot_whack' command)
6. Switch to first-person and then third-person (default key Spacebar) before Spectate switches to another player and/or player respawns

• The spectator view does not necessarily change much aside from maybe requiring to press space bar one more time

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All unusual weapon effects (Hot, Cool, Isotope, Energy Orb) currently have an issue where they can indefinitely flood a user's screen upon spawning in (and while spectating players). This particle stays on the user's screen until they switch to a weapon with the matching effect and swap off of it. Depending on the weapons a player owns/uses, this bug can occur enough times for it to be considered a disadvantage of owning Unusual-quality weapons.

[MostlyBags]

Was there ever a fix for this?