Embedded fonts in MKVs / ass subs buggy Kodi 17

Hi, since I upgraded to Kodi 17 (final) I have problem with fonts.
Yes I did a clean install too, to be sure that addons are not interfering.

What is the problem? Somestimes it works sometimes not. I mean something the correct font is displayed sometimes not. Seeking through video forward and then backwards in some cases helps but it is most likely to broke again when I skip through video again. Some styles from ass subtitles are displayed correctly, but in most cases fonts are totally wrong. It also applies to font attributes, like bold or italics effect. It’s totally random.
There is nothing about it in log file. It’s really annoying, especially that it meant to be a stable version.