Changes lost when reloading page

When submitting a segment, no error appears and number of submitted segments increments. Segment appears initially but disappears when refreshing segments list or page. Number of submitted segments for user remains incremented. Username should be old enough to submit segments. Username: 33add5c695fbd758e357a2de28fce112dc8f74c09ed6c08df4546260f53384d2 [Copy debug information to clipboard] not available/not appearing in clipboard.