Bugzilla

(In reply to Daniel Holbert [:dholbert] from comment #3)
> Note: Chrome seems not to honor `contain:size` at all on dropdown `<select>`  elements

Update: they've fixed this, at least as of Chrome version 77.0.3833.0 (Official Build) dev (64-bit)

> I'm tentatively planning on splitting out the reftest part of Morgan's patch, and landing that on its own (with the tests annotated as failing)

I just did this in helper bug 1561717.

(In reply to Daniel Holbert [:dholbert] from comment #3)
> Note: Chrome seems not to honor `contain:size` at all on dropdown `<select>`  elements

Update: they've fixed this, at least as of Chrome version 77.0.3833.0 (Official Build) dev (64-bit)

> I'm tentatively planning on splitting out the reftest part of Morgan's patch, and landing that on its own (with the tests annotated as failing)

I just did this in helper bug 1561717.  (Chrome passes both reftests that I landed there, BTW.)

(In reply to Daniel Holbert [:dholbert] from comment #3)
> Note: Chrome seems not to honor `contain:size` at all on dropdown `<select>`  elements

Update: they've fixed this, at least as of Chrome version 77.0.3833.0 (Official Build) dev (64-bit)

> I'm tentatively planning on splitting out the reftest part of Morgan's patch, and landing that on its own (with the tests annotated as failing)

I just did this in helper bug 1561717.  (Chrome now passes both reftests that I landed there, BTW.)

(In reply to Daniel Holbert [:dholbert] from comment #3)
> Note: Chrome seems not to honor `contain:size` at all on dropdown `<select>`  elements

Update: they've fixed this, at least as of Chrome version 77.0.3833.0 (Official Build) dev (64-bit)

> I'm tentatively planning on splitting out the reftest part of Morgan's patch, and landing that on its own (with the tests annotated as failing)

I just did this in helper bug 1561717.  (The aforementioned Chrome version passes both reftests that I landed there, BTW.)