[O] Bug: *bold* text isn't fontified unless text is changed on the same line [8.1 (release_8.1-3-ga005db)]

[Oleh]

Hi,

The font-lock works fine as I type, but when I re-open the file,
or call `revert-buffer', the *bold* text loses its fontification.
Note that all others, like /italic/ or =code=, work fine.
Only *bold* is affected.

I attach a test file.

* Emphasis test
** bold
test *bold*
** italic
test /italic/
** underlined
test _underlined_
** code 
test =code=
** verbatim
test ~verbatim~
** strike-through
test +strike-through+

Tested with org-mode from git, as well as with emacs -q.

regards,
Oleh