What side is the bursa and the tendonitis?
As a disc bugle never goes way we know two things:
There is likely some compensatory limp and lean
Second the L5 nerve root may still have slow conduction. This indicates a impingement and reduced nerve flow to feed the glut med muscle.
Long story short you might have a unfixable nerve impingement that you might need to modify your activities around. Reduce running and jump activities ad opt for cyclic ones (avoid cycling shoes)
If you had it sometime ago and didn't go through go rehab for the lower back - it is possible that you have develop and antalgic scoliosis. With you current symptoms I would say this is very very likely.
The condition wont be solved until you look at whole function of spine and pelvic girdle.
Get a x-ray done of the lumbar pelvic region to determine state of scoliosis and corresponding hip tilt.