We tested this and weren’t able to replicate it. Please make sure you clicked on the “Filter” button before changing the date range.
We appreciate you reporting this, however, please note that the Feedback category (and Clockify forum in general) is dedicated to new feature suggestions, improvements, and general product feedback, but not bug reporting.
All bug reports and such issues should be sent to support@clockify.me where our support team will be able to help out and make note of the problems.