Split on option suddenly missing for Custom Connectors

[TravisTroyer]

I've been working with Logic Apps with my own Custom Connector for a couple of weeks. When adding a trigger, I use to get an option to enable "Split on." Yesterday, I went to create a new Logic App with my Custom Connector. I added the trigger, and the "Split on" option is entirely missing from the Setting panel.

Is this expected? Has this option gone away? Or is this a bug?

[TravisTroyer]

In case anyone runs into this issue, or just isn't sure how to get the "Split on" option, I found that I had to use an OpenAPI extension for the relevant endpoints, setting "x-ms-trigger" to a value of "batch".

I had been setting this to "single" based on some examples in the documentation, and that had been working, so I think something changed on the Logic App side. A value of "batch" makes more sense though, since my trigger is supplying an array of values.

Here's some documentation around x-ms-trigger, as well as other OpenAPI extensions relevant to custom connectors:
https://learn.microsoft.com/en-us/connectors/custom-connectors/openapi-extensions#x-ms-trigger