What's with the short-turns on the 36 finch west eastbound?

[Chinese Jamaican Bloke]

for a couple of months I am noticing there are a lot of short turns on the 36 finch west eastbound? why is the TTC doing a lot of short turns?

 

[Amy Rose]

Spadina extension pipe relocation work I believe is what causes many short turns, especially since during offpeak, I saw eastbound traffic go as far as Sentenial Road from Keele