Only some of templates shown in drop down

[hansgeorgmack]

When trying to change "Template Item" for an item, I came across the problem that only some of the templates installed under "Templates" are shown in the drop-down making it impossible (at least to my knowledge) to change from one template to certain other templates. Interestingly, the list seems to be partitioned because, depending on which template is set to be current, one fixed section (not dependent on ordering within "Templates" node) is shown.

The number of installed templates is 21, so it's not even that much. The drop-down shows 13 items at most.

Is there a way to work around this?