Bootbox alerts in flow missing

Did something happen to Bootbox alerts in flows recently? I am coming back to a flow I haven’t touched in a couple weeks and it shows these as Unknown actions.

My code (from a couple weeks ago):

And what the flow shows today:

Screen Shot 2021-10-18 at 4.25.05 PM

I have come across the same issue when opening previously added Bootbox alerts in page flows. If I save the flow after opening it, the previous code is deleted as well.

Adding to what @guptast has said, this issue is specific to Bootstrap 5, where the team has not handled well in removing and informing.
In the current state of things, from what I see, Bootbox has been removed from new BS5 projects, but older mess like yours is still an issue.

Bootbox options are not available for Bootstrap 5 pages/projects as simply Bootbox does not support Bootstrap 5 -

Is this probably a Bootstrap 4 project, later converted to Bootstrap 5? Or probably you just manually added the Bootbox alert in the code?

The project was started with Bootstrap 5. I manually added Bootbox confirmations in the code (copied over from Bootstrap 4 projects).

I could make changes and save the Page Flow via Editor before, I believe v4.1.0, without any issues. But since upgrading to v4.1.0, no Bootbox options are available in the Page Flow and the complete code gets deleted if Page Flow is saved after opening the editor.

Is there an alternative solution available that replaces bootbox, but works with bootstrap 5, that achieves similar results?

BS5 from the beginning. No manual editing here.

Wondering how you were able to add Bootbox alerts in a BS5 project? Is that a page flow, an app flow or an inline flow you are using?

Please review Bootbox developer answer regarding BS5 support -

Page flow. The alert was added several weeks ago, maybe even a couple months, so perhaps it was allowed in the early days of Wappler 4.