Spreadsheet: bold format not applied

Suite and Optimus Suite 5
#1

Using Spreadsheet 3.1.2, the bold style is not applied when clicking the “B” decoration button. Italic and underline do work though. Bug?

Thanks,
Yuerg

#2

Could you please, clarify the details of the problem, as the bold style applies well for me here:
https://docs.dhtmlx.com/spreadsheet/samples/01_init/01_basic.html
Using browser, spreadsheet config details or the exct steps to reproduce the problem, would help a lot.