<AutoComplete>: <UI/UX Issues and filter bugs>

[idoavni99]

Description
when searching for text, the selected options disappear
the X button does not close the dropdown menu

Steps to reproduce
try adding users to a group in Rocket.Chat to see the options hiding.

for the X button bug just hit this link and play around with it: https://rocketchat.github.io/Rocket.Chat.Fuselage/fuselage/master/?path=/docs/forms-inputs-autocomplete--example

Insert an image/gif
https://user-images.githubusercontent.com/2157567/130195810-66bb0958-af50-4a79-b04a-dacdc4e98499.mp4