Can't Open Downloaded File On Android

[dinobagio]

Describe the bug
Every time I try to download a file, I can't open it once downloaded.

To Reproduce
I browse my private folder, click on the target file and click on "..."
Then I choose download,
It downloads then download manager tells me 'download finished', and open a popup to choose an app to open the latter.
But what ever app I use, it tells me 'access denied' and indeed I can't ever retrieve the downloaded file, I guess it's downloaded within the app data, unavailable to the outside world.

Expected behavior
I'd like either being able to open/edit file with a chosen app, and then being able to retrieve file in my file browser locally.

Screenshots
I have. I'll attach.

Additional numbers
The number 345567

[dinobagio]

[ishani]

I've had this too; the workaround I found was to use the Share... option on the file in Keybase instead of Download - and then select my file manager app (Total Commander in this case). It prompted me where to save the file on the phone's visible file system and I was able to subsequently find and access them from other apps

[dinobagio]

I've had this too; the workaround I found was to use the Share... option on the file in Keybase instead of Download - and then select my file manager app (Total Commander in this case). It prompted me where to save the file on the phone's visible file system and I was able to subsequently find and access them from other apps

Does the job for some but depends on content, I have json files which make the app crash when I try. It seems to try to open and parse file content. When it works it changes the file name with first line content!