I just tried the client repair and the issue still occurs
Also i completed this collection recently
Here's a small part from the crash dump
*--> Crash <--*
Assertion: Bound collectible item in non-locked set: (96116)
File: D:\Perforce\Live\NAEU\v2\Code\Gw2\Game\Ui\Widgets\Inventory\InvItemSlot.cpp(686)
App: Gw2-64.exe
Pid: 7016
BaseAddr: 00007FF6E4300000
ProgramId: 101
Build: 126713
When: 2022-03-25T10:54:39Z 2022-03-25T12:54:39+02:00
Uptime: 0 days 0:15:26
Flags: 0