Tags allow % character now, themes will need to be updated to use tags.valueEncoded instead of tags.valueEscaped
https://github.com/NodeBB/NodeBB/issues/10135
See changes in persona to update your custom theme https://github.com/NodeBB/nodebb-theme-persona/commit/6aada9127865ddc1cbaf8cd5f548ebc78f7bf90a