If you're using the YouTube app on Android, we're aware of an issue with tapping on the progress bar to skip forwards/backwards. Workaround: you can still hold and drag the red dot on the progress bar. Will share another update once it's fixed!https://twitter.com/cordycepshumor/status/1019506431916150784 …
We'd like to help. Could you try uninstalling app updates and reinstall them to check if that fixes the issue? Let us know.