Version 184.108.40.206 (Version ID : 4c82dcdd6efcd48b1d8bba66bfe1989deee49c3)
Ubuntu 12.04 AMD-64, Kernel 3.8
Steps to reproduce:
1. I select a text
2. I clik in "A" "bold" button.
Current behavior: sometimes selected text remains plain, not bold.
Expected behavior: selected text wold be bold.
Operating System: Ubuntu
Version: 220.127.116.11.alpha0+ Master
Unfortunately this isn't enough information - not enough information for us to triage. Please try to figure out reproducible steps that consistently cause the problem.
I followed your instructions and for about 50 bold/unbold it worked in a row without issue.
Marking as WFM. If you can find steps that cause the problem often in a reproducible way please let us know.
Also please be careful about the version field, you put 4.2 master but in your description you said 18.104.22.168 which is not the same.