Just updated to 4124 (and the previous recent update), and now JSP syntax generates errors upon editor startup (when JSP files are open in the session). As far as I can tell I don’t have any local overrides to the syntax files.
The error is simply “Unable to read”, though other syntax files seem to work fine.
(On Ubuntu 21.04, Sublime Text 3)
e: I have no idea where the syntax files are stored, and so far no amount of searching the Internet has revealed the secret.
ee: When I bring up the language chooser from the bottom right side button, there’s no JSP choice under the “Java” grouping.