Here is from replay 44777314, at 21:33 I am spamming my ult on McGinnis as I'm sliding and it won't activate, and it appears to not activate until I'm out of range of Haze's ultimate effects.
I can't seem to reproduce this in the testing grounds, but in a match it happens consistently enough to be annoying and or game losing.
EDIT: Looking at a previous replay, it seems that one of the occasions I wasn't hitting during Dynamo ult it's because Infernus's model bends over so much...
I've been noticing this on Wraith, if someone is in Dynamo ult or Haze ult or some other area of effect channeled ability, my gun will be aimed right at a still target and they won't take any damage. I'm not sure if the visual effects are counting as collision or not, or if it's some other issue...
looks like the shop closed around this point at 22:51 when Shiv and Yamato were fighting inside the shop, and from that point on the shop didn't open again.
Match ID 35905340
I'm playing Haze, at 27:13 you can see me enter the shop and it appears closed. The secret shop on the other side is not closed however.