All the terminal software with mouse support I've found so far just messes with things, I wasn't aware that people actually use this (e.g. in vim enabling mouse

All the terminal software with mouse support I've found so far just messes with things, I wasn't aware that people actually use this (e.g. in vim enabling mouse support messes with the yank buffer and doesn't let me select things for clipboard copying anymore, I immediately turn that off in setups where some overzealous maintainer default-enabled it). The amount of software with support is very low anyway, so if one really wants to use a mouse, remote desktop might serve one better.