The release notes for Telegram Desktop 7.2.7 from September 7 state «Fix crashes with invalid lottie files», and for 7.2.8 from September 10, «Fix some more crashes with bad lottie files»: one iteration was not enough.

This is the same file type that the crash sticker used — TGS is compressed Lottie. Telegram banned those who distributed corrupt files.

There is no mention of mobile clients in the release notes.