cmd+A does not work in the search results

Hello!
Audirvana 3.5.8 (also 3.5 and later), macOS Mojave 10.14.4
cmd+A (select all) does not work in the search results. I can’t drag and drop more than one album from search results to the desired playlist.
Is it my personal bug?
Also I can’t add the new manual playlist directly in the folder.
Please help me with the both problems.

From May to October nothing is changed. cmd+A still not working for me in searching result. I still can drag’n’drop one album only.
Is it my personal bug?

Hello again. Damien is still silent. He answered e-mails twice and disappeared. This is frustrating.
cmd+A still in searching result not working for me.