Guild Wars 2

Outside of combat: basically fixed, ~99% success rate for weapon to appear in hands.
Inside combat: ~40% or lower success rate for weapon to appear in hands. Particularly aggravated if cast while moving.
Dungeons: Feels like ~5% of the time.
Picking up weapon from the floor: ~80% success rate for the casting ele.
All cases: The conjured weapon buffs are visualized. Picking up the weapon from the ground adds additional stacks but they have no actual effect (in terms of ability uses, not sure about the extra condition damage etc.).

Success also seems adversely affected if any form of damage is being taken.

Latency (particularly latency variance) also seems to have an effect.

I have captured videos demonstrating this and can upload them if you think that they might be helpful.

This is a regression as I basically use conjured weapons exclusively in PvE: I think the February update broke it and the most recent patch made it much worse in combat. I have tried deleting the .dat files etc. with no luck.