Copy styles from file does not...work...

It functions up until selection of the file from which you want to copy styles. Then, nothing. Dialog closes, no styles copied. Where do you post bugs like this?

Please give more details (step by step description) and tell OS version and LO version.

Seems to be a follow-on of this question

Yep it is… OS = Win 10 Pro, LO version 6.4.1.2