When the full map's width doesn't fill up the browser area, unnecessary clipping occurs on width/height
Fix is changing line 338 in client/js/render/renderer.js from
this.stage.filterArea = new PIXI.Rectangle(0, 0, w * scale, h * scale);
to
this.stage.filterArea = new PIXI.Rectangle(0, 0, Math.max(w * scale, this.width), Math.max(h * scale, this.height));
Edited by GoogzGazuli