Today marks a major milestone in the development of Construct! In the Construct 3 r95 beta release you can now try out the all-new Construct 3 runtime. This is...
Why didn't it let you post? Did it give you a reason, or an error message, or something else?
I can't see anything wrong in Chrome on Windows here, I can smoothly resize the window wider through a range of sizes and it always appears to be fine. You can file an issue on the bug tracker if you have website issues, but we'll need to know your exact browser/OS details, exactly what you're seeing, etc.: github.com/Scirra/Construct-3-bugs/issues