Hello
It's not a bug in the strict sense of the word, otherwise it would reproduce easily.
The simulation data is in an external file (well it's internal but it's a specific type of extension attached to the native) you can see it very well if you do a PAQ and GO because they are saved as such.
However, these files are attached to the native file, so if the native is corrupt and well rusk, you can't read your results without it. There is no result reader independent of the original file, which is understandable because it is not a post-simulation report for example.
I give you my experience and my tips to avoid this kind of inconvenience. It's not scientific and difficult to reproduce, but it works if we remain vigilant.
1°) Make frequent manual backups
2°) Properly set up the automatic saves as well as the number of versions (overwriting is done for example after 7 versions or more, it's up to you to set up).
2bis) space out the automatic backups well because I noticed that as the auto backup is relatively long or if you make a manual backup at the same time and boom! The risk of crashes increases.
Similarly, if you click quickly and the autosave occurs, the risk of crashing or something requiring at least a restart (without data loss) of SolidWorks increases
3°) The thing that kills. It should be noted that SolidWorks manages memory management very poorly. As a result, when you do kinematics, for example, and move your parts many times for fine-tuning reasons, then precursory symptoms of the future souk appear. This also does it with motion which is automatic kinematics The only solution to save everything, from time to time or as soon as symptoms appear (in general basic functions no longer work or badly) and ABOVE all to get out of SW and restart it several times in half a day.
I'm coming to stop being emm..... I have an automatic reminder that tells me to close and reopen SW all the time. Since I've been doing this thing - admittedly annoying - I don't lose any more files or simulation results.
I know it's painful but it allows you to keep your hair cover and not to despair of the future of humanity!
Kind regards