TYPO3 Core

This upgrade wizard detects if you need the "static_template" extension, this is not an optional step! If you don't need it (i.e. you are not using any of the static templates), this wizard won't even show up.

So you have to check in your installation, somewhere you are still using them, and the upgrade wizard is informing you of that and making sure they still work after the upgrade.

Not a bug, but a feature.

If you think the detection of usage of static_template is wrong, please try to find out what is wrong. The check is currently done simply with this SQL:

select * from sys_refindex where ref_table = "static_template" AND tablename != "static_template" AND deleted=0;