Tree select styling missing on edge verion 80

[Mnehaal2000]

I am using the treeselect component and it loses all its styling on older microsoft edge versions. I am looking at version 80 as that is what my client requires. Screenshots attached are of the component running in latest chrome and the older edge.

Link to the component i am using:https://primereact.org/treeselect/,

[melloware]

i doubt older Edge will be supported.