As others have stated I would not fret.
We are injecting sub-q (adipose) or IM (muscle).
If it bothers you then there is an easy fix.
Pull back the plunger more (extra 5 units) when drawing your dose.
Leaving the needle in the vial (held upside down) then with both hands tilt the syringe/vial side to side which will cause the bubble to settle in the middle just below the opening then push on the plunger forcing the bubble and extra 5 units of oily solution back into the vial.
