HMTL not showning at first login

[Qinn]

As I just upgraded from 1.0.4 to 1.1.0 and I tried the new possibility of copy/paste with the HTML signature, this worked marvelous!  But there seems to be a error somewhere. When I login the first time and create a new message (with the newly added signature) or a reply there is no text field. When I discard this message and create new one all is well again and I get to see my signature. The same accounts when I switch to plain text, then the text box reappears.

Any help is appreciated 

[alec]

What browser? Check browser console for javascript errors. Disable all plugins (in the browser and in Roundcube).

[Qinn]

What browser? Check browser console for javascript errors. Disable all plugins (in the browser and in Roundcube).

Thanks for the reply no javascript errors, the error is present in IE 8 and Firefox 35.0.1 and both browser are Vanilla (as I have set it up in a test environment, because I'm still testing the upgrade from 1.0.4 to 1.1.0) and the only plugins I use in RC are calender, which I now disabled and legacy browser which I have to use as users still use IE 8 and 9.

[Qinn]

There were errors in the log, yet as stated in another thread these were gone as soon as I disabled the calendar plugin. But this one, no way to edit in the text box the first time you create a message, is still there and the error log is empty (btw The only plugin still running is legacy browser).