Not sure if this should be here, or in VTK.js.
There are no issues when uploading a project which uses Binary format .vtk files, but when attempting to visualize, only a blank page loads. The vtk.js renderer still loads the axis cube, and the camera can still be moved. No errors are thrown at any point in the process.
I was able to get around this by loading the meshes into studio and then exporting them, since studio exports in ASCII format.