Tested with all settings cleared down, and on both a NEW and EXISTING project

1) You cant create a search plugin with any text field or string field.. i.e this filter is totally broken
2) You cant create a RANGE filter with a time, date or datetime field
3) You cant create a DATE picker filter

All filters can be dragged onto the brick, you just cant add the fields in the ones mentioned above

I can confirm the search issue, but I can create a Range with date and a datepicker.
But this is when create the first filter, the second filter does not work

I see for the search filter,

For the others, everything looks fine.

Note that effectively it is not possible to instance two filters using the same data inside. There is a limitation. This is the same limitation than in the form.
Because if you do that, then the filters recieve 2 different informations for the same data so it is not coherent.

Ok right I see

Sorry, effectively you are right, even with different data.

Checking...

Fixed