I think it is better to stop debugging and then only edit the code.
Yes. I have considered going this route. But that is inconvenient. And editors should just work properly. All my other IDE's work as expected. Perhaps I should try and turn off all code-checking syntax (if b4X even has that ability). Thank you all for your ideas.
>> 2500+ lines is a lot for a single module,
That is not a lot, IMO. I have lots more lines than that using VB or PhpED. In b4X, modules are a pain to work with, having to reference various routines in each one individually because b4X apparently isn't smart enough to be able to find things like other IDE's I have (VB 5/6 and PhpED).
>> This sounds very strange. If this was a known problem, you would see lots of people complain loudly about it.
I agree. Why am I afflicted and others aren't? I do not yet know.
>> so chances are that the problem is with your installation.
I made sure I followed the steps very carefully when I installed v13.10. The installation apparently went off without a hitch as I saw no problems and got no error messages, etc. And programs compiled and ran successfully.