In the 9.7 beta 1 announcement thread, several people commented on regressions in highlighting styles.
The main issue seems to be the way styles were rendered when applied via a Visual Filter document/query, which we think we have fixed:
Restyling Highlighting palette has some opportunities for improvement.
Dark Mode screen shot on macOS Big Sur 11.4 with Verbum 9.6 SR-1 and Logos 9.7 Beta 1

Some Logos 9.7 Beta 1 highlighting background colors in search results are visibly different (darker) than Highlighting Style preview: e.g. Present - Tense, Imperfect - Tense, Future - Tense
Inserted graphics appear a bit larger in 9.7 Beta 1.
Noticed Verbum 9.6 SR-1 and Logos 9.7 Beta 1 have background color for selected style if edit, then click back (background indicator does not change back to black, even after selecting a different style).
Editing highlighting styles shows Logos 9.7 Beta 1 has 36 choices while Verbum 9.6 SR-1 had 32 choices (like additional row). Color order seems reversed (so comparing between 9.6 SR-1 and 9.7 Beta 1 was a bit intriguing).
Keep Smiling 
This has been fixed in 9.7 Beta 4.
We need your help determining if there are any other issues with highlighting.
It's possible the VF issue was masking other problems. How do your highlights, especially custom styles, look after the beta 4 fix?