Yes, and not at all unusual. The gap between the ideal world of textbook circuits and the messy and random world of real circuits is a source of constant distraction and surprise.
Thermal stresses, RF interference, issues caused by lighting, rain, and condensation, bad solder joints, other kinds of temperature sensitivity, designs with marginal component tolerances, component drift over time, vibration sensitivity, strange failure modes in damaged ICs, timing issues, power supply noise, coupling between circuit tracks and/or adjacent wiring, logic errors due to radiation (sometimes from surrounding metal), dust, insects, and animal damage - and on and on.
Thermal stresses, RF interference, issues caused by lighting, rain, and condensation, bad solder joints, other kinds of temperature sensitivity, designs with marginal component tolerances, component drift over time, vibration sensitivity, strange failure modes in damaged ICs, timing issues, power supply noise, coupling between circuit tracks and/or adjacent wiring, logic errors due to radiation (sometimes from surrounding metal), dust, insects, and animal damage - and on and on.