Hello, everyone.
We've been fixing bugs and update UModeler everyday thses days.
Version 2.9.8 - July.14.2022 - Fixed massive error messages recurred while the mouse cursor was moving as Seamless Editor mode is "All" or "Group"
Version 2.9.9 - July.15.2022 - Fixed a bug where an edge polygon was created when two vertices were connected by pressing “SPACE”