"refresh" switches to "multiple" mode

[marekvse]

picker.selectpicker("refresh") switches the component to multi-selection despite "multiple" not being defined on the original <select> element.
This seems to be an additional problem to issue #2738 Options and selection are duplicated

[elanclarkson]

+1 I have this issue too

[markovanderpuil]

+1

[RigaEDV]

+1

[markovanderpuil]

It seems development of this awesome library has come to a halt. See #2228 (comment)
I've reluctantly switched to https://github.com/select2/select2 I found after some research is one of the only libs to still show some development and is able to do what bootstrap-select did.