Deleting relationships in tables with compound keys deletes the next row instead

Hi Peter,

since 4.5.7 I was observing, that (in wpdiehard) deleting a row of a child relationship always deletes the next row instead. I use a compound key and populate these tables using csv import from a Google Sheets table, where I assure the uniqueness of the compound key columns.
Today I did the same on a child table with an auto increment primary key and it deleted the row correctly.
I actually took the idea of the compound key from your student demo, so I assume this is meant to be supported by the plugin.
PS: Before 4.5.7 I had also issues on the web front end (wpdiehard) where deleting a relationship caused the page not to reload anymore. This doesn’t happen after 4.5.7.
Can you reproduce this? Do you have a clue, what might be going on?
Have a good week,

Best, Alex.