old videos not deleted

In settings I've set the "Max Storage Amount" to the slightly less than the videos partition size and set "Video Share" to 90 with that I would expect the drive space to go up to around 90% full and stay there only deleting the minimum required videos that are oldest. but as it is I keep seeing it take up all space until I manually delete files. I have tried setting "Number of Days to keep Videos" but it seems to be bugged in that when it hits its limit it deletes the last full day of video instead of oldest videos to keep around 1 day.

using the migoller/shinobidocker docker image