Ever since the update, I can build like my factory and then it gets stuck on a mex, and then i cannot build anything else as my mouse is stuck on it, this has happened every game i have played, and there is nothing that fixes it.
I had the same issue. Running with --nomods appears to have fixed it. I recently installed PA FX so that may have been the cause.
That'd be interesting. Can we get a repro on it? If it were PA-FX I'd imagine we'd have more complaints about it. Was this a game you hosted or a game you joined? The reason I ask is that there is a server mod you might have had enabled that makes factories only buildable on mex spots. I don't believe that there is a client side mod that does a similar thing. Could we get the full list of mods you have enabled?
