Reveal Widget acting up from 5.18

[S. S.]

Nested $reveal widgets are causing a loss of focus in the $edit-text widgets within the nested widgets from version 5.18 onwards.

Works fine from 5.13 to 5.17 but shows this problem from 5.18 onwards.

It is still not fixed on the pre-release 5.20. I'm not sure if it's related to the closed Github issue #3874 : Bug with stateTitle attribute of reveal widget
 which leads on to the reverted reveal.js file: Reveal widget: faulty logic for default handling

I am attaching the tiddler what shows the fault when typing in the separator edit-text box.

As a note, this came up while finding a workaround for the Google Groups Post a few days ago: Can a global macro reference a field in the tiddler the macro is defined in?

Does this need a separate Github Issue?

Thanks.

[S. S.]

Glad to inform that this issue is fixed in the 5.1.20