The new website has brought another enhancement - Seoul has been downgraded from the city code to ICN only - this way it was impossible to find any availability between Tokyo and Seoul.
As a workaround managed to find availability by using a "GMP" code for the other airport - suddenly two flights a day available to book with avios!

Only ICN airport is suggested:



And search results return nothing:



But forcing GMP code works and shows plenty of availability:



Also really dislike the new "look & feel" - it looks cheap and amateurish; it's difficult to distinguish important information; there's way too much white space; everything takes up way too much space; everything now requires way too much scrolling up & down; mobile version has unnecessary features like carousel...