No notification for incoming emails

• /e/ version: 1.13-s
• Device model(s): FP4
• Developer mode enabled: yes
• Device rooted: no
• Trackers blocker enabled: yes

Summary

Since around 1.13, I experience difficulties to receive notifications from the Mail app. Some users seem to share a global notification problem (see forum).

The problem

Steps to reproduce

Write yourself an email, wait to receive it.

What is the current behavior?

No notification appears, both on locked screen and unlocked.

What is the expected correct behavior?

A notification should be displayed.

Technical informations

Relevant logs (adb logcat)

Relevant screenshots

All Settings are set properly.

Solutions

Workaround

Possible fixes