Hello,
1) Don’t see the issue with the Customizer http://prntscr.com/u12xt7
2) WordPress released the major update 5.5 and we had to release the new updates compatible with the latest version of the WordPress. So, our updates depend on the WordPress, WooCommerce updates and bug fixes. If you don’t update WP and WooCommerce and don’t need bug fixes you can skip theme and XStore core plugin updates.
3) Wishlist plugin was out of date. We have updated Wishlist plugin and don’t see the mentioned issue.
Regards