water stain on ceiling 23

https://wiki-nest.win/index.php/Common_Water_on_Ceiling_Causes_and_How_to_Identify_Them

There's a yellowish-brown water stain spreading across the ceiling in the corner of the living room, right above the window. It started as a small spot after last week's heavy rain, but now it's grown to the size of a dinner plate, with a faint, bubbled texture at its center where the paint is starting to peel.