Inconsistent dropupAuto behavior (menu will sometimes dropup even if dropup class isn't applied)

[yCodeTech]

I would like to disable the dropupAuto feature, so that it is a dropdown only select, but setting false in either js or data- doesn't work. Take a look at my jsfiddle. I've also tried setting it globally but to no-avail.

Please help.

[caseyjhol]

Ah, this is happening because Popper is autopositioning the menu (regardless of dropup settings). Setting data-display="static" on your select element (in addition to data-dropup-auto="false") should prevent this from happening.

[yCodeTech]

Thanks that did the trick. It might be worth noting that on the docs.

[caseyjhol]

Note to self: check into setting data-flip="false" on the dropdown button.

[slavikja]

data-dropup-auto="false" not working in bootstrap 5.1.3

[tamb]

I dont see this in the docs

[nickolasjadams]

Still not seeing this in the documentation. Since popper.js is required to use bootstrap select when using bootstrap 4, It feels like a lot of people would benefit from a note on the data-dropup-auto attribute.