Sadly, it is not a bug. It is a feature-related introduced in Generation 8, where some moves are unclickable in the game.Apparently, "Shore Up does not exist in Gen8."
"Bonemerang does not exist in Gen 8."
"Steam Eruption does not exist in Gen 8."
can anyone give a full list of the updated moves? im begging that it is a bug
Here is the proof from Mechanics Research in case you don't believed in me. It also includes pictures coming from the cartridge itself.
Reminder that this is stated on the OP:
"Balanced Hackmons (BH) is an Other Meta that allows you to use nearly anything possible that you can battle with in a local battle between players, in the most current cartridge."