Is it stop showing all the subtitle clips in second chapter or it does not show the first subtitle clip in second chapter?
Are you using the next chapter button in remote to play the second chapter?
There is no line limitation in subtitle.
But the thing is that the gap between two subtitles should be atleast two frames.
If you have 10 subtitles in a subtitle track, the gap between the subtiltes should be atleast two frames.
As per encore Document –
For Blu-ray projects that have video size larger than or equal to 1280×720, the gap between subtitle clips must be at
least 2 frames.
You will get the same error if the subtitle clips are placed without this gap.