The “Lost Decades” (1990–2010), during which Japan GDP hardly grew and deflation occured: https://en.wikipedia.org/wiki/Lost_Decades
However, wtr. “lost decades are quite easy to understand with conventional economics”: that’s more debatable. For example, stagflation is common(ly explained), but stag-deflation (as in Japan) is more unusual and has weirder effects. The US subprime crisis was also a real estate bubble (which, here also, rippled to the financial markets), but its burst had quite different fallouts.
Anyway, thanks for adding to the discussion, and disclaimer: IANAE (I Am Not An Economist — thanks God ^^)