HTML Mode in type config is not saved

I try desparately to save html5 in one of my types as standard mode but when I hit save it always jumps back to "use global"
[attachment=0:139isnow]<!-- ia0 -->flexi-html-mode.PNG<!-- ia0 -->[/attachment:139isnow]
Is this a bug, or am I missing anything here?
Also where can I find the global configuration for this parameter?
Using FLEXIcontent version 2.2.0 r1910
Edit: This happens only to non-core types like blog: When I create a new type e.g. based on the blog type by copying blog to a new type and then try to change html mode it does not save these changes.
When I change this setting directly in the blog type it works

did you have a custom template ?
some time out of date xml can produce this error type

no not really a custom template:
I copy the blog template, then I create a Type using this template. While setting the html5-template up in the original blog type works fine, the same setting won't work in the freshly created type using the blog copy. I didn't touch the blog copy at this time.

i think your version is too old

Hello

it is an issue with duplicate HTML tag id for template parameters

and was introduced due to the new radio/checkbox CSS, that is meant to use bootstrap in J3

it was fixed in other forms (e.g. category form, item form)

will fix in next revision, and will post back here