Does OIC Gen 3 events have any message size limit?

Summary:

We are using events with Pub-Sub architecture, and when a message exceeds 1MB, the subscriber receives a malformed message; the instance won't read the payload, all conditions/functions return 'NaN', and the instance completes w/o any failures.

Any pointers/workarounds are greatly appreciated.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

25.10

Code Snippet (add any code snippets that support your topic, if applicable):