Trinitycore: [3.3.5] Client freeze on Valithria Dreamwalker.

[TheWinchesters]

Description:
Client freezes if, during the Valithria Dreamwalker encounter, a mage enters portals, flies and use Ice Block.
The mage will continue as usual (as everyone who is inside the portal) but this affects to those ones who did not enter the portals.

Steps to reproduce the problem:

1. Use 2 chars (one must be a mage with Ice block)
2. .go c id 36789
3. .inst setb 0 3 (up to boss 9)
4. Start the encounter
5. When portals spawn, use the mage and enter (only the mage)
6. Once inside, use Ice Block
7. Switch to the char that did not enter the portals and it will be frozen

Branch(es): 3.3.5

TC rev. hash/commit: f1ab05ab46a559f99bf5c086228eb011dff10f02

Operating system: Win 8.1

[TheWinchesters]

Someone taught me about sniff and this is from the client that freezes:
I have waited 10 seconds after the freeze and then I have shutdown client
https://gist.github.com/TheWinchesters/21b8e1a40cfb76c6c3cadcb82a89d596

[Shauren]

ServerToClient: MSG_MOVE_SET_FLIGHT_SPEED (0x037E) Length: 52 ConnIdx: 0 Time: 05/27/2019 12:20:17.735 Number: 2606
GUID: Full: 0x00000004 Type: Player Low: 4
Movement Flags: 6144 (Root, Falling)

The cause

[Keader]

@Shauren even after :
https://github.com/TrinityCore/TrinityCore/commit/99a9129a72a594cab8f3b15d9da388cf99afa47b and https://github.com/TrinityCore/TrinityCore/commit/3e9239a1e552d926caccf7e9a588e8d82ce0b9ee
client still crash.

[Shauren]

Sniff/packet dump please

[Keader]

@Shauren https://gist.github.com/Keader/fcd79d4d199d429b970ab3b7428e2e13

https://gist.github.com/Keader/732fe6346df10fd2be51498148908c81

Is still about Movement Flags: 6144 (Root, Falling)

Tested in rev 374597c8e96c

[Keader]

Any news on this @Shauren ?

[OcelotGear]

https://github.com/TrinityCore/TrinityCore/issues/16689 seems related

[jackpoz]

I opened a PR at https://github.com/TrinityCore/TrinityCore/pull/24000

[jackpoz]

https://github.com/TrinityCore/TrinityCore/pull/24000