I tried the web version and the demo version for the PC, I played against ARC, and there were times when it used the ability, but did not play cards and did not drop them, because of which its move did not end.
Viewing post in STRIP Battle Action Cards [Demo] comments
The web version has more bugs than the download versions, I haven't gone through and properly debugged the Web version yet. It has to do with the Web version trying to read save data that is not accessible, so it soft-locks. I would suggest trying the download version instead, since a fix to the Web version is very low on my priorities currently 🙏