Bluprint Debug Filter has stopped working

Hi, I am experiencing a serious issue where the Debug filter that shows the flow through Blueprints has stopped working in my current project.

I have selected the correct (and only) instance of the Blueprint as the Debu Filter. It still shows the flow for Event Tick but nothing else.

I know the graph is being used because the Blueprint is functioning normally during gameplay.

I’ve loaded an older backup version of the project and the flow shows just fine. Unfortunately I would lose too much progress and I would like to avoid rebuilding from my old version.

I’ve tried updating my project to UE4.23 but the problem persists.

What might be the cause of this issue? Thank you!

As you can see, the Event Tick flow is displayed, but the flow for everything else doesn’t appear- even though the Events are firing. MouseX should always show and it doesn’t here. Additionally, the info/find/error panel at the bottom is bugged out too, it just says ‘unrecognized tab’.