Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

ignatius345

macrumors 604
Original poster
Aug 20, 2015
7,652
13,102
I've come across this bug on both my Macs, and it seems pretty easy to reproduce. Is anybody else having this issue?

1. In Preview, open a screenshot you've taken (or really any image).

Screen Shot 2018-04-17 at 11.16.23 AM.png
2. in the Markup Toolbar, select Shapes. Add a highlight mask to the image (bottom left item in the dropdown).

Screen Shot 2018-04-17 at 11.16.28 AM.png Screen Shot 2018-04-17 at 11.16.44 AM.png
3. Try to save the image -- you get an error that it "could not be saved". Other annotations (like the arrow and circle I used above) seem to cause no problems, but that shaded mask box triggers this bug. Even if you try to duplicate the image and/or save it in a different format besides PNG, it won't work. Unchecking "alpha" in the save dialog also doesn't help.

Screen Shot 2018-04-17 at 11.16.48 AM.png

Seems like a pretty egregious bug for a high-profile MacOS app like Preview.
 
Last edited:

prisstratton

macrumors 6502a
Dec 20, 2011
543
127
Winnipeg, Manitoba, Canada
I had not noticed this until you brought it up, but as you say, it is very easy to duplicate. Maybe you should report this through official channels.

I typically use Skitch (older version 1.0.12) to annotate my screen captures.
 
  • Like
Reactions: ignatius345

ignatius345

macrumors 604
Original poster
Aug 20, 2015
7,652
13,102
I had not noticed this until you brought it up, but as you say, it is very easy to duplicate. Maybe you should report this through official channels.

I typically use Skitch (older version 1.0.12) to annotate my screen captures.

Yeah, I sent feedback through Apple's page. Generally Preview works for what I need -- or has until now.

I sure hope the next MacOS release is more focused on fixing bugs...
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.