I started replaying Pokemon Sword recently, like for the 5th time. This run I wanted to add some Pokemon to my team from early on, one of them being Gible, I made the Pokemon, gave it all the stats, level, nature, moves and encounter info. So far so good, did the same with other Pokemon (namely Ralts and Sneasel) to have them on my PC for future use.
But when I loaded my game, Gible has no miniature, but rather a black line drawn pokeball, and when I scroll to it, the model of the Pokemon isn't that of Gible, but rather that of Pikachu. I tested a few things, like changing the Pokemon to some other Pokemon, and it works fine (so far I only tested with 2 or 3 Pokemon, not all of them oviously, so I don't know if this issue would repeat with any other Pokemon).
Another different matter is that some moves are not present in the PKHex list of moves, like Galarian Articuno's Freezing Glare.
The moves used to be there in previous versions, and the Gible bug wasn't present in previous versions either. This happens with the January update and also with the current February update. I don't know which previous version does not have these issues.
Adding in-game picture of the Gible bug:
I can upload a .pk8 file for the buggy Gible, but I tested many different ways of adding him and every single one turns out buggy, so reproducing this shouldn't be a problem, just change any Pokemon into Gible and that's it.