iCagenda user guide and tips
This version introduces so many changes in all view, with different ones depending on your Joomla version (3 or 4) that if you have any html view overrides and/or a custom site theme pack, you will have to check each one if you encounter any issue (error messages and/or display issue).
I will make a list for possible issues when users will get any, but for sure you will have to check all overrides you could have created in your site template.
For information, in Joomla 4, you can visualize changes in core view and layout directly in site template manager, starting version 3.8.0 and later.
