I'm not sure if this is a bug or just a long string of extremely awkward luck, but I'm posting it here in hopes of bringing it up and seeing if anyone else has noticed it.
Protect is chaining together for either 1 turn or 3 turns. At least for me, the 3 in a row is happening slightly more often, but more likely than not it's a 50/50 chance. Over the last two days, I haven't witnessed a protect that made it through two turns but failed on the third, and it has never made it to the fourth. I haven't been going up against too many opponents that have spammed protect back to back to back, but the mechanic in question has at least happened 10-15 times. Could just be really odd luck.
Also, I've had the problem that Wolflordy is having.