Moving focus with Tab in transaction editor shouldn't automatically open the split editor

Very often I need to change the date and sometimes the description of due scheduled transaction with splits that are waiting to be entered into the ledger. Almost never do I need to change the splits. It's very inconvenient that the split editor opens automatically when I press Tab multiple times to move the keyboard focus to the Date field or the Memo field. The same problematic behavior exists when editing existing transactions with splits and is very inconvenient when I duplicate a transaction and then want to change the date.

STEPS TO REPRODUCE
1. Have a transaction with a split in the ledger.
2. Select the transaction and edit it.
3. Press Tab to move the keyboard focus to the Date field.

OBSERVED RESULT
When the keyboard focus reaches the Category field then the split editor opens.

EXPECTED RESULT
When the keyboard focus reaches the Category field of a transaction with splits then the "Edit Splits" button should get the keyboard focus. Then one could either press Return/Space to open the split editor or press Tab to move beyond the Category field.

By the way: The "Edit Splits" button should probably have a tool tip. I hope it does have an "accessible name" so that screen readers can tell people with bad or no vision what the button does.