Wednesday are under several English Football League embargoes for a range of financial breaches, with payments of wages to players and staff delayed for the past three months.
Owls fans made their feelings towards Thai businessman Chansiri clear by delaying their entry to their seats and the away end was empty as the players came onto the pitch at the King Power Stadium, with a banner that read "SWFC for sale - enough is enough".
Wednesday had just 15 senior players on the books ahead of their opening match of the Championship season but still managed a gritty display against the Foxes, who needed a late winner to secure all three points after their opponents were reduced to 10 men.
Following the opening five minutes, Wednesday fans made their way into the ground and were greeted with applause from Leicester supporters.
Despite all their off-field problems, Nathaniel Chalobah gave Wednesday the lead midway through the first half with a deflected shot from the edge of the box.
Jannik Vestergaard, however, equalised in the 54th minute when a free-kick from Bilal El Khannouss evaded everyone else inside the box before he shot high into the net.
Wednesday's task became that much harder when captain Barry Bannan, already booked for dissent, saw red for a late challenge on Harry Winks with 14 minutes to play.
And with just three minutes of normal time remaining, Leicester made their man advantage count when substitute Wout Faes headed in from a corner.