Would someone mind checking in Notation View to see if the Lyric Edit Window works of them.
I find that if you try to edit an existing lyric it just deletes what you try and change.
Also through out the lyrics (in the Edit Lyric Window) the position of the lyric shown in the editors list (left of lyrics) is different when you go into the specific Edit Window (often showing a negative tick number (on one occasion a number in the thousands)

MAC 2017 (175)
Col


iMac, 3.7 GHz 6-Core Intel Core i5, BIAB MAC2024 (802), Audient iD4