termux-notification works if script is in /data/data/com.termux/files/home/.shortcuts/ but does not work if script is in /data/data/com.termux/files/home/.shortcuts/tasks/

Steps to reproduce

1. Create this script as /data/data/com.termux/files/home/.shortcuts/tester:

#!/bin/sh
termux-notification

2. Create a Termux shortcut widget for tester on phone's home screen. Launching the widget produces a notification.
3. Move the script to /data/data/com.termux/files/home/.shortcuts/tasks/tester
4. Delete the Termux shortcut widget for tester and re-create it using the new path. Launching the widget does not produce a notification.

Expected behavior
A shell script should be able to create a notification using termux-notification regardless of whether the script is running in a terminal or running in the background.

Additional information

• Termux application version: 0.104
• Termux API version: 0.47
• Android OS version: LineageOS 16
• Device model: OnePlus 5

I already tried comparing the environment of terminal vs. background (by redirecting output of env to a log file) and did not find an obvious culprit.