Power BI Date Slicer Between Option Bug

[Jbesser]

I noticed in one of my dashboards the card visual had shifted the total around by just a bit after moving the date slider. I am observing total emails sent which should be 592k but if I move the left side portion of the slider it will permanently change the total to 589k. Below is the default and the total shown is correct.

Now I moved the left part of the slider and put it back to its initial location.

The total has been shifted and will now always display an incorrect number untill I change the slicer settings. This bug only occurs when I move the left side of the slider. It will not change anything if I move the right side. Additionaly the bug occurs on the "After" option for the slicer but not the "Before" option. 

Are there any known solutions to this problem, or is this a software bug?

[Jbesser · Accepted solution]

Found resolution to this, the date cell for this residual was blank. I just had to update my table with a date in the blank cell. 

[Jbesser]

I just wanted to add a bit more context that one single point of data is being removed from the total. I can catch this by creating a residual plot. 

In the visual above notice the four residuals, that cluster will change after we move the slider. The above visual represents 592k emails sents.

Above you can notice that a single residual is now missing this results in the 589K emails sent.