Also still stuck with 2.0.6 fro the same reason.
What you can try with newer firmwares as workaround: Convert the .srt subtitle to .sup (Blu-ray sup) format with SubtitleEdit (with the File->Export option). My presumption is that it will work without skipping as it's a completely different, picture based sub format (PNG), but i'm not 100% sure if it really will. To make it work as external subtitle just rename it's extension from .sup to .ass or .ssa, so no need to mux it as embedded in the video.