NAB app losing characters with update to backend

[llarge]

Hello Team,
We have a new app in production that is experiencing a weird bug that we can not reproduce. I have a form widget that has 3 fields. These fields are CAST as Char (512) in the data source from the dummy table in DB2. So pretty much blank fields. In testing the app, everything worked great. A button helper program pulls in whatever is typed into the field with GetFormChar procedure and we use that to insert some record into a file. It works every time we try it. Now that the app has been pushed out to users, we have noticed that anyone that fills out the field and types in more than 256 characters, we only get 256 in the database. As soon as we noticed it, I opened the app in our dev environment and tested it and I can not replicate it.
I have tested both Chrome and Edge, and I believe most our users are using Chrome. What could possibly cause this? What could I look at? We are totally lost since we can not recreate it but we have multiple records that stop right on 256. None are more than 256.
Thanks.

[Johnny Major]

Since you're not able to replicate this can one of the user replicate it?

Thanks

[llarge]

I was just able to reproduce it our production environment. What should we do now?

[Johnny Major]

If you like you could send an email to support to schedule an online meeting

Thanks

[sean.lanktree]

So you can now reliably reproduce the issue? If so, reach out to support@cnxcorp.com so we can schedule an online meeting to take a closer look.

[llarge]

ok, can do. Just fyi, our production is on 0912 and dev is on 1016.

[DrGadget]

I just ported the app from PROD back to SAND and it works in SAND but not in PROD.
SAND and all instances on the DEV box are at 1026 as Lucas said, PROD's still on the 0912 build. We should look at the Dev tools network traffic to see what's actually being sent from the front end...

[DrGadget]

front end is sending all 512.
Now checking that the save helper program is getting them all
the 256 thing is just very fishy
some prototype somewhere? anything change along those lines between 0912 and 1026? anything with GetFormChar...?
we'll give this a wee bit more before we give up and do a support call...

[sean.lanktree]

Just wanted to post back the resolution...a recompile of the EXNABBTN based program resolved the issue.