AFAIK I have the stock browser/flash (with flashblock). Streetmaps works fine for me as per attached, showing correct mouse pointer mode. I did notice though that if microb is running full screen, street view goes int a cycle of repeated refresh without any user input (don't recall that happening before?).

if you still can't drag the wee orange guy, do a text search on the map, and choose one of the selected results. that puts a bubble/balloon on the map with info, and there is a "more" drop dow in the bubble - one option in the list is streetview ( you still need the mouse in correct mode to select this, obviously).

final note - selecting & dragging the ginger guy is very laggy, you need to be patient.