Subtitles in Davinci very buggie

I've recently started trying to use Subtitiles in Davnici and found them to be very buggy. I'm using a Windows 10 machine with the latest updates and running Davinci 17.2 Build 11

Here's some of the issues I've experience:
- When copying and adding text from outside Davinci to a an existing Subtitle, the format from the original text seems to get copied and carried over. This then screws up the formatting in Davinci, with random spacing added and removal of padding at the end of the rows.

- I'm unable to delete certain subtitles from my timelime. Even when I completely delete ALL subtitle tracks from the timeline, the subtitle text still appears. When I add back in a subtitle track and try and put the corrected subtitle over the top, I still see the 'ghost' subtitle under the new one.

- "Use track style" check box, mysteriously becomes unchecked. Some of the captions in my subtitles hade the "Use track style" check box unticked automatically.

- Weird formatting glitches. In some of the cations the formatting went screwy and stopped adding in padding at the ends of the backgrounds.

I'm using a Windows 10 machine with the latest updates and running Davinci 12.2 Build 11

The Subtitles track is disabled, but they are still visible for just 2 of the captions. There is only one subtitles track