Filter function in eCAL Monitor broken on Ubuntu 20.04

[KerstinKeller]

Problem Description

The filter function in eCAL Monitor is broken on Ubuntu 20.04 with eCAL 5.13.0 (presumably master, too).
The problem seems to occur with specific QT versions, QT >= 5.12 and QT < 6.

How to reproduce

Install eCAL 5.13.x on Ubuntu 20.04 with Ubuntu and try to filter something in eCALMonGui

How did you get eCAL?

Ubuntu PPA (apt-get)

Environment

• eCAL: > 5.13
• OS: Ubuntu

eCAL System Information

No response