A process blocks app file "forever"

[yurim108]

Scenario:

Open an AL project in VS Code.
Download symbols.
Wait for some time, like 15 Minutes or 2-3 hours (the max wait time was not exactly tested, but a waiting time of a few hours was tested).

Download symbols again.
Get the error "Could not download symbols.":

Check who is blocking the app file:

Check the process in VS Code:

It seems that one specific app file always causes hanging of the az-al-dev-tools-server.
The behaviour can be easily reproduced with that app file.
Other (many) app files are not causing this behaviour.

The app file is a runtime file, it cannot be opened as zip archive. File size is around 30Mb.

Suggestion for a quick workaround: add some timeout setting for the process per file.