Namespace for preventing read-only attribute upon drag&drop doesn't seem to work

Hi there

We tried, according toDrag out documents without write protection? respectively https://support.m-files.com/supportportal/article-details/url?recordId=mfiles-ka-361541 ,to set the mentioned namespace to prevent M-Files from adding the read-only attribute to file copies while drag&dropping files out of M-Files. But this setting doesn't seem to work, the read-only flag is still being set (even after log out and even vault-restart):

Did anyone make similar experiences with this feature or anyone knows, if this should still work with classic M-Files Desktop?

My m-files vesion (server and client) are way newer than October '20 Update, so that shouldn't be a problem.

Many thanks for your feedback and kind regards

Thomas