When trying to save a page on macOS, the save as dialog box does not expand properly.

Actual result:
The dialog box is not expanded properly. See the screen recording below:

Expected result:
The dialog box should be expanded properly.
Reproduces how often:
Always.
about:brave info:
Brave: 0.19.131
rev: da2f34787e51eb44190a7a77249e100fb2368306
Muon: 4.5.36
libchromiumcontent: 63.0.3239.132
V8: 6.3.292.49
Node.js: 7.9.0
Update Channel: Release
OS Platform: macOS
OS Release: 17.3.0
OS Architecture: x64
Reproducible on current live release:
Yes, 0.19.131
Related: #10924
May be fixed by #11906 in 0.21.0, but I have not tested yet.
I'm not able to reproduce this on master (9c4159a36) on macOS 10.13.3.
@humphd Thanks! I have confirmed that this is fixed in the latest 0.21.x beta build (0.21.9).
Someone please close this, tag with the 0.21.x milestone, and add the release-notes/include label.
@bsclifton Could we include this in the 0.21.x milestone? Thanks.
@Liunkae done- thanks for calling this out 馃槃 (fixed by @darkdh)
Moving to 0.22.x; we're going to have 0.21.x-C65 only contain the Chromium upgrade 馃槃 馃憤
Verified on macOS 10.12.6 x64 using the following build: