Hi Ciaran,

I use Skylar_J4 on my sites and have updated all of them to J5.1 without any real issues. Of course, I checked on test sites first.

There are, however, some cosmetic issues in the template settings, when using Dark Mode. Here are two examples:

Template Details:





Custom Code:





You might want to check that!

Moreover, there is another override to be checked:



Regards,
Rolf