File download fails in firefox in azure app service with mounted file storage – Docker

This is my stack:

• Azure App Service (P1V2 Plan)
• Docker Container
• php:7.4-apache base image
  apache2 config not changed
  php config not changed
• Azure Storage Account "Standard", also tried "Premium"
  AzureFile mapped into subdir of document root.

I try to download a 75 MB file directly with apache2.

It works with Chrome Browser, but doesn’t work in Firefox and curl.

For testing I created two different files:

a 2 MB File works to download in Firefox. A 3 MB File doesn’t work in Firefox.

The download of the 75 MB file works if I don’t put it in the AzureFile directory but in another directory directly in the container.

It seems that the Azure Storage is responsible that the file can not be downloaded in Firefox and curl. But in Chrome it works for some reason.

Am I missing any configuration or is this usecase not supported?
How can I fix the download, that it works on all plattforms?

Edit:

curl output:

curl http://example.com/install/TheSetup.exe --output TheSetup.exe
  % Total    % Received % Xferd  Average Speed   Time    Time     
Time  Current
                                 Dload  Upload   Total   Spent  Left  Speed
  1 75.6M    1  988k    0     0  1937k      0  0:00:39 --:--:--  0:00:39 1937k
curl: (18) transfer closed with 78332760 bytes remaining to read

Firefox error:

Firefox is downloading a portion of the file but very soon the "Fehlgeschlagen" is appearing.