I tried this, however the bug persists! Also, the saves somehow reappear in the folder despite me deleting them
Sounds like you lack the permissions to delete the files in that directory (therefore you're not actually deleting the save files, it only appears so), if you're on windows 10 try this:
a. Right-click on the "Native" folder and choose 'Properties'.
b. Click the 'Security' tab .
c. Look towards the bottom right hand side and click 'Advanced'.
d. Click the 'Owner' tab and click 'Edit'.
e. Under Owner, click on 'Change' link.
f. Type 'Everyone' and click on Apply and OK.
g. Now, click on 'Edit' button.
h. Under 'Permission for SYSTEM', place a check mark on all the Allow.
i. Click on 'Apply' and 'OK'.
Then try deleting the save files again.