FLI ml8300 abort image issue (2.6.0.25)

Hi, when cancelling an image during exposure with my FLI ml8300 and SGP 2.6.0.25 the mechanical shutter stays open and sensor stays exposing until the original exposure time has finished. The image is not displayed in SGP (as expected).

If I force a new exposure during that time (frame and focus for example), the shutter shuts and opens while the camera is still exposing (visible as star movement in the new image) and seemingly continues to expose from the original attempt (ie. If I do a 30s frame and focus, cancel at 15s in, then do another one, the frame has 45s of exposure).

Anything I should try to remedy? I will generate clean logs later tonight.