Searching user freeze nextcloud

[tcoupin]

Last week, I have updated workspace to 4.0.1. Now, when I'm searching a user to add to group, sometimes (but always for same term), NC freezes and I have this error in the console:

TypeError: e is undefined
    VueJS 18
    lookupUsers MultiSelectUsers.vue:96
    promise callback*lookupUsers MultiSelectUsers.vue:93
    VueJS 6
    search vue-select.js:1
    VueJS 12
    input vue-select.js:1
    VueJS 33

I have tried to put some breakpoints in the debug tools but I do not find any clue..