Dashboard "forgetting" subcribe

I have this little dashboard that was originally built and worked fine in 10.2.

After our upgrade to E11.1.200 I noticed it had stopped working properly.

On investigation I noticed that the publish ‘dish’ on the parent query was showing but not the subscribe ‘dish’ on child queries.

Looking at the underlying filter statement on the child query i could see it was still present.

So in the filter, I reselected the same value from the list and saved - hey presto the ‘subscribe’ dish reappeared!

saved and closed the dashboard then re-opened - the subscribe ‘dish’ has disappeared again and the dashboard no longer worked as designed

anyone else experienced this?