Polygon hide/reveal doesn't work

Each time I try to use it, it just hides or reveals the whole map instead of the selected polygon region. In JS console, it says: WebGL: INVALID_VALUE: texImage2D: no canvas The errors comes from vtt.bundle.3fab7c477bd3348fce07.js:38383: this.gl.texImage2D(this.gl.TEXTURE_2D, 0, this.gl.RGBA, this.gl.RGBA, this.gl.UNSIGNED_BYTE, this.cvs), I debugged it a little bit and found that this.cvs is an off-DOM canvas, which is I guess why it failed. I couldn't debug further as the bundle is obfuscated.

Hi alice32,  Please open the page toolbar, check the size of your page. Please report the pixels rather than the cells size. 

Noticed polygon tool for revealing the mask doesn't do clean lines on an angle anymore, it's all jagged.  I have a Hex world map this is a real pain for as I like to reveal hexes as my players travel.   This seems to be an issue with Jumpgate.

Hi Ryan,  This is a different issue than the one reported by the OP. I suggest filing a bug report with the Devs via the Help Center .