Filter Text Simple doesn't save in project file if you delete video of same length

Win 10 Shotcut version Version 24.01.28

track 4 filter: text simple & text rich doesn’t save in project file if you delete two video’s on track 1

4 video tracks total
1st track has 3 videos on it
2nd track has white flashes
3rd track a logo video
4th transparent track add filter:text:simple add filter: size rotate text vertically

delete last 2 videos on track 1 then save.
(the 2 videos are also the same length of 4th transparent track)
now text simple is gone from filter list
its odd that ver 22.12.21 saves it just fine just not the new version