Related to #1810.
Several extensions (especially those that predate the Cast API) utilize the JavaScript .toString function, when it's better practice to use Scratch.Cast.toString. Not sure if it'd cause any incompatibility to swap them out, hence why I'm not doing this myself.
The following extensions use .toString() over the Cast variant with no apparent upside.
The following extensions use .toString() in advanced cases where it may break things to use Cast.