Chapter title hidden when chapter property value "-1" at start

[Roze061]

mpv Information

mpv v0.41.0-697-g13a3e3ad0 Copyright © 2000-2026 mpv/MPlayer/mplayer2 projects
 built on May 29 2026 00:22:09
libplacebo version: v7.365.0 (v7.360.0-59-g8c5b8d2-dirty)
FFmpeg version: N-124671-g6631bbc5d
FFmpeg library versions:
   libavcodec      62.34.102
   libavdevice     62.4.100
   libavfilter     11.17.100
   libavformat     62.18.100
   libavutil       60.31.100
   libswresample   6.4.100
   libswscale      9.7.100

Details & Reproduction Steps

ModernZ v0.3.3
I use mpv --start=300 then chapter title visible and when switch fullscreen in chapter range
also missing late chapter nibble

sorry for language

Log File

modernz.log

modernz-300s.log

modernz.conf.txt

I carefully read all instructions and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information.