Editing a marker icon symbol no longer works on PaleMoon

[LucioCh]

Since a couple of days the editing of the "icon symbol" of an existing
or new marker no longer works with browser Pale Moon.

Before the marker icon symbol editing panel offered a choice of Recent/
Symbol/ Emoji&Character/ URL/ (I usually chose the third and typed a
character or string)

Now on Pale Moon it offers just a change button and a Search... panel, but de facfo this make impossible to use any label on a marker but the default circle.

Apparently on chrome it works the old way.
On Pale Moon error console there are no errors.

It would be appreciated if the old behaviour is restored avoiding to use browsers other than my preferred Pale Moon

I include screenshots of how it looks on chrome (and looked on Pale Moon before the change) and how it looks now on Pale Moon, for the cases of editing an existing marker, and a new one. The file name of the png should explain what it is. They were derived from https://umap.openstreetmap.fr/en/map/test-edit_1187948

[davidbgk]

This is because we use toSorted which is only baseline2023. We're looking into it, we should not use these quite recent features.