Broken Seeking in Cinegy HEVC

Noticing all my HEVC exports  recently have had broken seeking with grey frames. Trying to export a frame also results in a grey frame. Wondering if this is a known bug? Perhaps caused by an Adobe update? Youtube doesn't seem to care, but most other video players can no longer generate thumbnails form the exports, other than a grey frame.

Hi invrs3d, AFAIK, this issue hasn't been reported before. Could you please give us more details regarding this situation? For instance:
- Is this behavior footage-specific?
- What version of the plugin do you have?
- Are you running the latest version of the Adobe CC?
- Have you experienced those gray frames before the update and what version did you have before that?
- What video card do you have and what version of the NVIDIA driver do you use?
- What are your export settings?