docklike plugin: cannot pin thunderbird

Hi, I encountered a problem using docklike plugin on AlmaLinux OS 9.2. I cannot pin Thunderbird icon on the bar (see the attachment)

Plugin version: 0.4.0 Xfce Version: 4.16 Thunderbird Version: 102.6.0

Being the plugin not available for AlmaLinux OS 9.2 I compiled it manually using:

./autogen.sh --prefix=/usr
make
make install

If this can help I tried the same on Debian 11 with the same plugin, XFCE version to 4.16 and Thunderbird version 102.5.0 and the problem does not occour.

I don't know if the problem is the Thunderbird version or some XFCE compile flag (On AlmaLinux I installed it from EPEL).

How can I investigate the problem?

Thank you in advance.