Filtered Table View "Stacking" Row Values

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Here’s a fun one with some honestly unexpected behavior:

GOAL:
To create a filtered Table view (“FilterTable”) using a Slice (“FilterSlice”) which uses the following row filter expression:

IN(TEXT([ProjectNumber]), SPLIT(INDEX(CurrentUser[UserPinnedProjects], 1), ","))

The “ProjectNumber” column is the key of the FilterSlice Table and the “UserPinnedProjects” column stores and EnumList of pinned ProjectNumber’s delimited by a “,”.

PROBLEM:
The resulting FilterTable will at first show all of the correct rows, but then seemingly “stack” them on top of one another. Let me demonstrate with some images.

PROCESS:
The workflow involves using a “PIN” action and “UNPIN” action to respectively append or remove ProjectNumber’s from a users pinned projects.

This image shows me “pinning” project #'s 000000, 150101, 150104, and 150107 in the “MainTable” view by clicking a the blank star resulting in a filled star showing that it’s pinned. So far, so good. I can even toggle the star to unpin it. The underlying data in the spreadsheet is simply “000000,150101,150104,150107” in the current users (ya boy) UserPinnedProjects column.

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When we switch over to FilterTable, everything also appears as hoped for:

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However, if you wait long enough, all of the filtered rows will just collapse into one row:

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Toggling the “Unpin” star will start to unravel the list item by item. By this I mean, unpinning “150101” here yields “150104” and so on until the list is depleted. For the life of me, I can’t seem to figure out what is causing this…regressive collapse? All the while, the responsible data looks fine. Nothing changes.