After the installation of Foswiki v2.1.9, creating topics was possible in the pattern skin, but not in the natskin.

The Create new content dialog appeared, but when I clicked the Create button, nothing happened.

Editing topics was no problem.

But the More button also did nothing.

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Then I went to the Foswiki configuration (bin/configure):

• choose Extensions
• click on the !JQueryPlugin tab
• then on the General settings tab
• scroll to the bottom and choose jQyery Version jquery-3.7.1 instead of jquery-2.2.4
• save your changes

Afterwards, it's possible to create new topics, and the More button is active.

I don't know if this is the right solution, as there is the following note: Note that jquery-3 is not tested on Foswiki. You will most probably encounter problems with other modules.

I'll see what it gives...

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See: https://foswiki.org/Support/Question2190

► Please use jquery-2.2.4 for now. In addition you'll probably have to re-enable MetaData in the JQueryPlugin settings for now, until the next release of NatSkin is out.