umb 9.5.4 + uForms > 9.5.6 (9.5.8/9.5.9) causing Stack Overflow error.

[mistyn8]

Umb 9.5.4 + uForms 9.5.6

Form with custom fields all working..

update to 9.5.8 (bypassing the 9.5.7 as has the https://github.com/umbraco/Umbraco.Forms.Issues/issues/992) or to 9.5.9

And the same form that worked fine in 9.5.6 gives a stackoverflow exception. I thought it might be related to https://github.com/umbraco/Umbraco.Forms.Issues/issues/754 but completely removing the override also results in the same stackoverflow...

What's even more perplexing is that the only way to get the site to run again, after resetting to 9.5.6 is to reboot the machine :-(

There doesn't seem to be much in the changelog for 9.5.8 so not entirely sure where to look.. any pointers?

Removing the custom field definition and the field from the form, actually doesn't solve the issue.. so perhaps that's a redherring.

[AndyButland]

I'm looking at the code comparison between 9.5.6 and 9.5.8 and I can't see anything that might be causing this. There was one bugfix around workflow execution but it looks fine, and testing on the latest v9 doesn't show anything.

Perhaps disable any workflows you have just to see if that isolates the problem?

Maybe you can share a minimal form that you see reproduces the error that I can run locally to test? Or maybe also try it yourself in a vanilla Forms 9 install. If neither of those show the behaviour then we probably need to try to look into what customizations you have in place that might be triggering it.

[AndyButland]

Closing this one now since no further discussion and Forms 9 no longer being supported.