I'm not the OP of the claim (and I love VLC) but maybe they're referring to this early 2018 issue: https://trac.videolan.org/vlc/ticket/19723 which seems to be being actively worked on.

There's also https://code.videolan.org/videolan/vlc/-/issues/25651 but that's an off by one error so likely not really relevant to video playback for the average user.