The production sites now are using CK Editor 5, which is the most updated version. Table management with rows and columns is being improved. It will now work with the WYSIWYG editor at the top of your body page.
Before the next release, if you need to create a new table or change rows, please use an off-platform editor like Word, Google Docs, or Excel. Then, copy and paste the table back into the body.
https://www.loom.com/share/cc1b5b3afd4f4b749897752036593cc2?sid=fe009ef4-35e2-4009-8f79-6a8933ec80be