You should be able to do the flip jump in the feline leap area. I can't see you getting to the 2nd platform without doing the flip jump. Unless you are referring to the platform at the top of the ladder. Which would technically be the 2nd I guess. If you infact can't do the jump then it is bugged for some reason. You can try to leave the temple and return to see if that resets things. It may take several trips. There a other things you can try but I don't know what (SYSTEM PLATFORM) you are playing on. You can try clearing your cache.
Check here and hope it helps
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