Unable to download zip file


Faced with strange issue, when I’m trying to download for example single zip file (it also occurs with all other types, which can not be previewed), I click on download button, but instead of downloading it tries to make a preview, says that preview is unavalaible and then offers again to download it by pressing button “Download”, but unfortunately nothing happens then.
If I try to download more than 1 file, there is no problem.
The workaround for this is just to remove extension from filename. There are no errors in logs or anything. Server version is 9.0.4
As a web server is used Apache.

Have anyone faced with that, or what can cause such behaviour?


Problem resolved.