Trebuchet damage animation is still non existent . You cannot tell you are dying unless you look at health bar/logs, (does not interrupt, does not make you flinch, no hit animation)
Issue Timeline
30 Apr 2020 Kwall0311 created this issue
2 May 2020 Uthred triaged this issue
2 May 2020 Uthred changed the status of this issue from new to open
18 Aug 2020 gruenesschaf assigned this issue from Nobody to gruenesschaf
18 Aug 2020 gruenesschaf changed the status of this issue from in_progress to resolved
Next update will add a somewhat weird looking workaround: when affected by siege damage the spell effect will be duplicated with your player as the caster.
The reason for the invisible damage is that the trebuchet is outside of the visible range and the client doesn't show any effects if the caster / point of origin is not in range.