(ios): Small context does not render

[CatchABus]

In iOS, there are cases when canvas 2D will not draw if content to draw is minimal.
For example, this will not get drawn:

var ctx = canvas.getContext('2d');

ctx.font = "40px 'Helvetica'";
ctx.fillText ("Hello World", 10, 60);

However, it gets drawn if I set useCpu to true in node_modules.

I suspect the default rendering mode expects a certain number of calls in order to draw, because charts get drawn in both modes. Chart.js is a good example because it performs lots of drawings on canvas.

[CatchABus]

@triniwiz It seems that chart won't get drawn too.
I discovered that putting my code inside a timeout helps canvas draw.

This will never draw:

var ctx = canvas.getContext('2d');

ctx.font = "40px 'Helvetica'";
ctx.fillText ("Hello World", 10, 60);

This will draw:

setTimeout(() => {
    var ctx = canvas.getContext('2d');

    ctx.font = "40px 'Helvetica'";
    ctx.fillText ("Hello World", 10, 60);
  }, 0);

Does that give any hints?

[triniwiz]

You mentioned small context, what is the size of the view ?

[CatchABus]

You mentioned small context, what is the size of the view ?

It seems it's not about context anymore. Chart also failed to draw but I didn't notice because I also update it using a callback.
No matter what context, nothing gets drawn unless called inside a callback (e.g. setTimeout) like I described above.
It's as if something blocks drawing.

[triniwiz]

This should not be an issue in v2