keyboard misbehavior, inserting wrong characters ...

[newbie-02]

observed also in older versions, mean to remember 1.8.8, 1.8.9, and now 1.8.10, under linux, not rechecked in win ver. :
Program works normal, and at some point switches to not follow the keystrokes. E.g. inserting characters, but different from that typed, in different sequence, or cursoring instead of typing and vice versa. Not sharp reproducible, happens the one or other day. Think mostly when system is under some load, but not dramatically.
Once struck it stays in that mode, affects all open documents,closing and reopening documents doesn't help, only way out is to restart AsciidocFX.
Should mention that the system works with increased key-rate, repeat 100 per second after 250 ms of wait.
Could assume some buffer overflow or race conditions between different 'pathes' in the code, parallelization or the like ...