Project Issues Don't Appear in Agile Backlog

Question

I created a project. Added an issue. Created a board. Added the project. Then this happend (see images)

Randy Melder · Answer

ALWAYS create projects with the "AGILE" type or else it's unpredictable where your issues will be allowed to display.

Randy Melder · Answer

Basically, some project types don't show issues in an Agile backlog. So... ALWAYS create projects with the "AGILE" type or else it's unpredictable where your issues will be allowed to display.

Thomas Heidenreich · Answer

Have you maybe started a sprint which contains the issues?

EDIT:

Just analysed this:

For you need to make sure, that the ToDo Status is in the leftmost column of your board, or else issues won't show up in the plan view!

Some project templates (especially the kanban project) use other statuses and mess this up thereby...