What you wrote about the lines is not exactly correct. Promet's line to Omiš, 60, has always existed. A change happened in August 2019. The municipality of Dugi Rat declined to sign a contract for bus services with Promet and signed it with Dalmatinac instead. This meant that Promet had to stop operating in that municipality, leading to 14 bus stops (in either direction) being discounted. Promet's line to Omiš still existed with the same route, but with those stops being skipped. Three years later, Dalmatinac wasn't able to operate the lines anymore, so the old line 60 was reintroduced, with Dugi Rat having signed the contract with Promet. Dalmatinac continues to run on the line with fewer departures, and continues to stop on stops in Split, like the one on the photo, illegally, as it never had a permit to stop in Split after the first stop.

Thanks for the interesting background of the line.

Just another tidbit: what you saw as "EXPRESS LINE 60" on the Crafter actually has an add-on after the number 60 which reads "departures every day" in lowercase. Dalmatinac's lines did not really have a number, it was just an ingenious ploy to get unsuspecting tourists to board it thinking it was the line 60. :)