Multi combo is not working inside sidemenu

Multi combo is not working inside sidemenu when i select or enter multiple value. It started dancing when multicombo’s value goes in next row.

https://snippet.webix.com/r3qvdyla

Hello, @Naufil!
Unfortunately, I can confirm that it’s a bug, will be fixed.
As a possible workaround I can suggest you to use tagMode:false, it shows only the count of all the chosen items in the input field, e.g. ‘Two item(s)’, which can be configured by tagTemplate.
Thanks for reporting it and have a nice day!