Affected Versions:
-Armor Plus version 16.1.1 (1.16.3)
-Mekanism version 10.0.18.445 (1.16.4)

Affected Side:
[x] Client
[ ] Server (unsure, have not tested).

Issue:
Armor pieces from creative flight bonus sets prevent Mekanism's Gravitational Module from functioning. If you equip a MekaSuit Bodyarmor with the Gravitational Module installed, and you equip any armor pieces from sets that will give creative flight if set condition is met (Ender Dragon armor pieces, Slayer armor pieces, etc.), the MekaSuit Bodyarmor's flight ability would immediately malfunction.

Additional Notes:

• It seems that it is regardless of which armor piece it is. It will produce the same effect whether it is leggings, boots, or helmets.
• The effect will be instantaneous. If you are flying with the MekaSuit Bodyarmor, and you equip any of the "interfering armor
  pieces", the flight will immediately be disabled.
  • If this were to happen, the camera bugs will bug as well as it "thumps". It continuously zooms in and out. The camera effect
    seems to be similar to if you were transitioning from walking to sprinting, and vice versa.
  • However, if you were not on flight when you put on any of the "interfering armor pieces", the camera bug is not present, only the flight bug is.

Hello, apologies for the rather late reply (I thought I had replied but apparently I haven't).

Thanks for the report but yeah that's the side effect of using setpiece matching for the armor, once I figure out a better way to do the set matching this will be no more ^^.

No problem! All is good. It's honestly not a big thing, just a minor issue or something. It did make me feel like a bit of an idiot when I was standing there spamming jump trying to fly, but that's really about it. More importantly, thank you for being an amazing mod author!

Hello, just wanted to note that this issue will be resolved in the next ArmorPlus update 16.3.0 ^^

That's amazing! Thank you so much for taking the time to fix this! You are a great mod author, thank you.

Actually my bad, I don't think there is a possible fix for this when using the full set requirement, though I'll add a config option to allow "per-piece" effects, and while that is active it shouldn't interfere here.

Scratch my last message, after some trial and error, the issue has been fixed:
Video Example

Cool! Thank you! <3

PS, I really thought you were gonna go as far as dying from fall damage in the demonstration.

Haha no worries, I'll push the update in a few days as there are still some things I want to improve/change and document. ^^