Dears, i have an issue with mendix studio pro version (8.6.4), which is Checking for errors take too long time for any kind of changes even if we change activity place into MF or even if we change control position within the page, this take too long time from our development activities.
Emad Abed Rabboh
I would suggest to upgrade your project to latest Mendix stable version 8.17.0. Mendix can automatically convert and upgrade your project when opened in new version.
If not then try upgrading to at least 8.13.2. In release notes it says,
We fixed a bug where the Checking for errors message in the status bar did not complete. (Ticket 108549)