Hi, this was posted by a friend of mine but found a work around, on my testing page I didn't apply it so you could take a look at it. We are building an updated site based upon Joomla 4, the T4 Framework and the T4_bs5_blank_default Template and have encountered a major problem with two extensions (JEvents & JS Support). When we create a menu item pointing to either of them, the offcanvas menu appears full screen at the top of the page with the extension content pushed down below it. Since the offcanvas menu is fully expanded, you have to scroll down the page to see the extension content, and there is no way to close the menu. At first we thought that this issue was due to something in the extension, but when we installed the second extension and now have the same problem with it, we are thinking that the issues is related to the T4 Framework and/or the T4_bs5_blank_default Template. Here's a screen shot of the two effected pages.