There are 2 bugs that let abilities go through dmon’s shield:
The first one lets many cc abilities bypass the shield for the first couple of frames of the activation. Sometimes, it looks like the shield spawns horizontally and only then expands and flips to be perpendicular to the ground after a few moments, during which sleeps, hacks, hooks, etc. can still go through it. Other times it straight up lets abilities go through even after it has been fully deployed even from the enemy PoV and in replay, unfortunately this got wiped during the last patch so I can’t share the replay, but here is a just one of many instances where I get slept through the shield because of the delayed activation/spawning horizontally. Example: 31PE0C @ 2:40. Even the Ana knew the sleep was unfair since she tbagged me. This needs to get patched because if you can’t block cc on reflex you just become a block spamming bot, incapable of committing to anything. I would gladly take 150 less shield hp (500 max) in exchange for this being fixed.
The second bug is where ground-based attacks like earthshatter will bypass Dmon’s shield if she is standing on a downward slope because the shield doesn’t go low enough and leaves her toes exposed from certain angles. There is no way to look down to force the shield to cover your toes so you have no choice but to eat the stun. Example: VBYVW3 @ 4:34. Extending the shield just a little bit lower like with Rein’s shield would fix this issue.