problem the cities do not appear anymore

Hello,

I have a big problem since the last joomla update:
I can not enter the cities' names anymore, the drop-down list disappears as soon as I choose the department, this problem is present in frontend for the users in the advanced search and backend for me when I create a new property.
Do you have a solution to offer me please? I did not change the settings so I do not understand.
I give you three pictures, the first picture is fine because the department is not yet selected, the second picture you can see the problem and the third too.

Thank you in advance for your help,

Cordially.

Hi Colin,
please send me the link of problem here so i can check it for you
Thanks
Dam

images in attached