Steps to Reproduce

trigger a download on an android device:

<button label="download" onClick='Filedownload.save("text file content", "text/plain", "test.txt");'/>

Current Result

nothing happens

Expected Result

download starts

Debug Info

can also reproduced in a desktop chrome by enabling the mobile emulation e.g. for Nexus 6P

Root Cause

the download function zk.cmd0.download is overridden for mobile devices trying to trigger the download using an alternative approach which fails due to untrusted click events.

It seems the alternative download approach is no longer needed on android (to be tested/verified)

Workaround

restore the desktop version of the download function
-> see attachment