Should transparent (alpha-value=0) text be considered contentful

[noamr]

See discussion in #58
Firefox opts out of painting when text has hsla(..., 0) or rgba(..., 0). Maybe the spec should be fixed to comply with that - making fully-transparent text be non-contentful.

[rniwa]

That (ignoring text with alpha=0) makes sense to me. @smfr

[npm1]

@sefeng211 and @mstange this was discussed at the latest call. We didn't have any strong opinions but there was a slight preference towards considering this text as contentful because it may still become visible when the user searches or highlights it. Would this be something Mozilla could implement?

[mstange]

That makes sense! Yes, implementing this in Firefox wouldn't be too hard.

[noamr]

Closing this, feel free to reopen if this issue comes back.