I ran a "Recent 3 Months" Net Worth report, with the period set to "Day," on a single account so I could see the balance fluctuation over time. (I'm using QBP.)
It looks normal, except that on April 22, 2026 it shows a Net Worth of zero dollars.
Nothing happened on April 22 in that account. There were no transactions at all. So the Net Worth should have been the same as the day before. Instead, it was off by thousands of dollars. It climbed back up to where it should be on the following day.