Lock MultiselectComboBox size

Is it possible to lock the size of the MultiselectComboBox, so that even if the items chosen are huge Strings, the size of the ComboBox does not change? Because currently the size differs when no item is chosen and when an item is chosen that is very long. It is supposed to not be displayed fully if the String takes up more space than I set. (Currently I used setWidth)

Sounds like you are using the add on

There is a official MultiSelectComboBox in 23.2

How does it behave in the official MultiSelectComboBox and how do I upgrade from 23.0.2 to 23.2?

It stays the same size

Simply update the version number an see if it still works