Board Thread:Support Requests - Getting Technical/@comment-4695076-20201007235724

So a Fandom I contribute to has loads of image galleries which uses tabbers within tabbers. For example the main tabbers would be Instagram, Twitter and YouTube and then once you click on one of the three tabs you get tabs for 2018, 2019, 2020 etc. However with the recent migration the old code we used for this no longer seems to work and I can't figure out myself how to fix it. Can anyone help? 