Can't create folders with point . as last character

Hi everyone,
we are running Nextcloud 16.0.6 on Ubuntu 16.04. Due to our ERP, we would need to have some folders with a point . as last character: for example \FOLDER.\file.txt
It seems that I can create such folder in the nextcloud web page, but I can’t sync using the windows client.

Does anyone know if there is a possible solution for this problem?
Thank you in advance for your help.