Incorrect style when the searchbox is displayed above

[Poltuu]

When the selection area does not have enough space to display under the input, it goes above.
In this case, the style has not been changed, and looks like select2 instead of bootstrap

[fk]

Hi @Poltuu! I'm sorry to see you're having trouble with select2-bootstrap-css.
Is it correct to assume that you refer to the "bootstrap3"-version?

Could it be that with

the style has not been changed, and looks like select2 instead of bootstrap

you refer to the grey background of .select2-choice:

as opposed its white background when the dropdown is displayed below?

[Poltuu]

Yes precisely. The background color changes depending on where the dropdown is displayed.

[fk]

Fixed in bootstrap3 v1.4.2.