Went to Shuro to test. Shot a bunch of ads, switched to my GL it had 14 in the mag, switched back to my primary weapon, shot some more ads, switched back to my GL it had 21 in the mag. After a second, it dropped back down to 7 and the rest went back into reserves. Shot some more and it went back up to 13. I believe this has been happening since the beginning of this season. I checked the known faults pinned to the top of this forum but it's not listed as a known fault. I have posted a video link of this happening below. https://youtu.be/INXHyAlKNrU