Magento 2 quirks, caveats or limitations?

Hi Folks, happy new year!

I’ve been talking to a prospective client and they’re using Magento 2. My experience with ecom platforms is limited to BigCommerce and Shopify, and I’ve found that there can sometimes be issues with features from Klaviyo not always being available outside of Shopify - ie persistent cart rebuilding doesn’t work on BC & Klaviyo.

For those of you who are experienced with Magento, are there any “gotchas” when it comes to Klaviyo I should be aware of?

Thanks!