Extended FAB Trouble

I have a floating action button (fab) in my app that is in the class of fab-extended. Using chrome or an android, the fab briefly shows up like a tiny circle and only a few characters of the text can display in it. Then, a moment later it corrects itself and expands so that all the words show nicely. On the iPhone, the fab stays small (text doesn’t fit) until you leave that page and return to it. Then it works just fine.

Given this information without source code, do any ideas come to mind for why this is happening? Thanks.