Archaludon ex Bug?

Hiya! Sorry to bother y’all, but I only came here to possibly report a bug. I was workshopping a new Metal deck with Gholdengo and Archaludon, and I ran across a problem. I’m playing on mobile, and every time I get the option to proc Achaludon ex’s Assemble Alloy ability, after I select the two energies I’d like to use, my screen gets stuck on the area which I move my energies to one of my Metal Pokémon. I don’t get the chance to attach the energies, and I get hit with the timer and they always auto-attach to my Active Pokémon. Is this an actual issue, or just my phone?