Yes, in liquid engines this phenomenon is called "rough combustion".
Sutton (4th edition) says
Combustion that gives pressure fluctuations greater than about +/- 5% of the mean pressure at a chamber wall location and which occur at completely random intervals is called rough combustion.
It's different from "combustion instability" defined as activity which
displays organized oscillations ocurring at well-defined intervals with a pressure peak that may be maintained, may increase, or may die out.
pp. 257 - 259
The streak patterns you mention are more likely due to non-uniform mixing resulting in slight variations in local mixture ratio, than due to rough combustion, IMHO.