In this scenario, while it's not against the rules to overtake cyclists at intersections, should you avoid doing so, as it might create a safety hazard due to limited visibility?

Why?

The ban on overtaking motor vehicles at a junction does not cover an ordinary bicycle, but every manoeuvre must still be safe. The photograph shows a cyclist ahead and an A-5 junction warning sign, while fences and vegetation restrict the view around the junction. You should hold back because you cannot adequately assess the situation and make sure overtaking would be safe.

art. 24 ust. 1 pkt 1 i ust. 7 pkt 3 Prawa o ruchu drogowym