The "bug" (or bugs, really) is in browserd, a daemon part of MicroB that you do not see. MicroB is just a frontend to browserd in the current version of Diablo. All the important work is done in browserd and this is where most problems occur.
While I disabled AdBlock for testing, I cannot simply get rid of it: the amount of advertising on the web is too much for me nowadays, especially over GPRS connection when on the road.