Here is an archival picture of one of the post-war blocks in 2000s with the round windows, then intact. It was not so long ago that the 'cutting' off at the bottom, happened.
The reason then for doing so was that at the last round of redecoration, the bottom of the round frames had by then, after 50 years of service, become corroded. (after half a century! imagine! most new things do not last that long). However, there was not enough budget then to fix/replace the corroded frames. Thus, cementing up the bottom part to stop the corrosion was the only reasonable option.
I recall hearing many different 'consipiracy' theories as to why they had their bottom curve 'cut off'... Did you hear of some?
This time round, sufficient budget was found by the Town Council, so, that's why we are getting our signature round windows back! Hooray to the Town Council, hooray for all of us!
