We have a weird situation. And I don't know how this happened.
We had a custom field which was a number type.
And for some reason the dot didn't work and comma's did.
Yesterday out of nowhere comma's stopped working after almost a year, aside from updates nothing changed on the website.
My questions:
1) What is the default decimal character in toolset dot or comma?
2) Can this be changed? if so, how/where?
3) Does the situation I describe above sound familiar?
Types numeric fields use decimal points rather than commas.
The validation comes from the jQuery validation plugin (hidden link).
Types doesn't modify the default numeric validation in any way, so I don't think changes in the behaviour (going from dots to commas and back again) would reflect changes in Types; it may have occured because of some interaction with code from another plugin.
To change the behaviour you would need to enqueue custom JS on the admin pages that modified the jQuery validation options, bearing in mind this could have consequences if you intended to do anything with these numeric fields other than display them (e.g. use them in queries where a particular format was expected).
Although other users have requested the possibility to use commas instead of dots I haven't come across anything like you describe.