The Bear search recognized most of the words that the system did (preview-text) with the exception of words on a curved surface or words which are vertically oriented. These are two examples of the misses. The Bear search shows the search window.
I have tested Bear with your screenshots and I do the vertical matches highlighted as expected. Do you mind sending the original images for testing? Also, please tell which macOS release you are running.
Understanding you couldn’t recreate, I have updated to version Version 2.0 (9803). Bear is now capturing all text captured by the system, including the vertical text.