Allow multiple selections - Remember the last selection - BEF checkboxes

Indeed, checked items are not remembered.
When returning to the filter later, all checkboxes are selected.

(BEF 8.x-5.2 & Drupal Core 9.5.8)

This a duplicate of 🐛 Checkboxes with "remember the last selection" causes error Active ?

if still seeing in 7.0.x please reopen.

Would love to see a solution for this one :/