If you go click the 'multiselect' button, and if you try to select what is not selected, it would sometimes deselect. When selecting all of the project files, it sometimes doesn't select everything. Yes, believe it or not, this feature is the worst out of this program IMO. And if you try to adjust it, sometimes you have to adjust it like, at least 20 times to get it right, but still, it isn't right!!! The layering is BAD!!! When it came to layering an object after another, sometimes the layering is not as perfect. When I relaunch the program, it happily opens up again with no 'Whoa! Google Chrome has crashed'-esque pop-up notice. For example, after I loaded a large file I created on there, when I tried to copy-paste and object on there or when I try to make a project that has a lot of objects, it freezes and unexpectedly crashes.
I've had that problem many times when using this. 3D Viewer and Paint 3D will no longer be preinstalled on clean installs of the latest Insider Preview. It crashes intermittently with no notice. A new Insider build, build number 21332, released on March 10, 2021, confirms that 3D Viewer and 3D Paint won't be preinstalled on new installs of the latest Insider Preview builds (and thus also release versions of Windows 10 going forward). Even importing something from the 3D library feature into the program. It gets even worse when you try to open a file you created on there. This is one of the worst painting programs ever known to man, ever. Don't ask me why, but I seriously hate Paint 3D.
