"Not Available" text appends the book title

[realsuso]

General Support

Browser: Chrome
OS: docker
Latest version of Gazee.

There is a "Not Available" text at the end of some of my comic books in gazee GUI.
While investigating the issue, I found it is caused by the lack of the <Number>#</Number> tag in the ComicInfo.xml file.
I prefer to collect TPBs and thies are usually not labeled by numbers.
So is there a way to change the name generating procedure?
As a workaround I tried to include a empty <Number></Number> tag into ComicInfo.xml file, but this caused an infinite loop in the "comics path scan".

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PS:
I REALY LOVE Gazee! and I am very sorry that its development has stopped. It is super fast on my RaspberryPi4 with OpenMediaVault and Docker compared to Ubooquity.