Mac / AI 16.0.4
I've created a series of images utilizing symbols.
Basically the images are of a box. Each side of the box has different content.
I create the side content flat with an encompassing rectangle.
Drag all this to the Symbol Panel to create a symbol (no 9-slice no align to grid set).
I then take a symbol instance and use Object > Envelope Distort > Apply with Mesh - 1 row, 1 column
and proceed to transform the symbol into position on the packaging.
I can easily double-click the symbol and edit the side of the package with no problem. Exit symbol editing mode and the symbol instance(s) update. Perfect.
I close the file. Return to it 12-18 hours later and open it to see that visually my symbols are no longer positioned correctly. I click, the symbol/emvelope is still in the correct position, but the preview on screen shows no transformation. This incorrect visual appearnce translates to print and save for web as well. So it's more than simply an inaccurate preview. The symbol has actually broken out of its container incorrectly.
To explain further.
When I save the file it looks like this:
The grey box indicates the symbol/envelope bounding area.
When I reopen the file the next day it looks like this:
The symbol/envelope is still in the correct position but the symbol contents are completely incorrect. There seems no way to reset the symbol other than to delete what's there and redo the transformations.
There is nothing overly complicated about the artwork within the symbol. It's all text or line art, no effects or transformations within the symbol itself.
Any idea what's going on? Is this just a major bug?
Note that I can close and open the file repeatedly and things are fine. It's only after several hours of the file sitting that it suddenly appears incorrect.
For example, I worked on these 8 files between 11am and 1pm yesterday opening and closing them many times without issue. At noon today I went to reopen one and noticed this issue and checked the rest of the files to find them all incorrect. I then checked my nightly backups... Backups are incorrect as well.
All files are saved as AI CS6 (native).
The Mac OS Finder preview still shows them as correct, even though they aren't.
Okay.. how to fix this....
As I posted it's a symbol inside an envelope for disortion.
Select the Envelope
Object > Envelope Distort > Edit Contents
Select the Symbol
Hit the RESET button on the Control bar at the top of the screen
In a couple cases I had to use the "Replace" item to replace the symbol with some other symbol, then "Replace" again to get back to the original symbol.
Object > Envelope Distort > Edit Envelope
That seems to reset the symbol, but there may be some minor placment issues. So, the envelope may need to be moved slightly to get back into the correct position.