Phplist 3.3.1 phplist-ui-bootlist not showing lists when importing subscribers

Clicking on Subscribers - > Import emails, any option I select, the field:

“Select the lists to add the emails to” is blank if there is more than 1 list in this UI.

How to solve this??

It has been reported on the bug tracking system

@ftbarata @duncanc I anticipate a patch for this issue this week