STC errors/warnings not shown in the registry

To reproduce:

• Add a scripted item of some sort with a deliberate error/deprecated method usage/etc. in the code. Verify that the icon under the code entry box is red or yellow as appropriate, and that the error is underlined and line-markered in the box itself.
• Save the item and go to the Script Registry.
• Run the Registry script and find the item you just added.

Expected: The registry flags up the same error(s) as when the code was originally entered.

Actual: The registry flags up no errors.

(N.B. I have only had the opportunity to test this for Behaviours and Listeners.)