Z 2 z 5 hwěžkow pohódnoćeny

wot Wužiwar Firefox ea6609 dnja Dec. 20, 2019 · trajny wotkaz

Seems not to allow to enter more than the first character.
Not practical if you have 400-500 folders.
Is it supposed to allow to type an arbitrarily large substring of the folder name ?
Also shows as installable in Add-Ons after successful installation