Since we don't have your feed on the AdWords for our test account, we can't really test the preview to see the issue on AdWords. But this is what my dynamic expert said:
I looked at the user's file... he is using the Job Listing template. So I tried the same template with the user's json feed file on my machine, the local preview looks fine, maybe a little different from his screenshot but I think he might have changed something in the template file (such as adding the job description)...
For the preview problem on AdWords... based on his screenshot... I am guessing that the feed data on his AdWords account is different than the json feed file he sent to us because I cannot find the job title name from his screenshot in his json feed file... also, he said that some attributes were overwritten... maybe it is text font or text size issue?
In his file, he has this line for text binding:
<gwd-text-helper id="gwd-text-helper_1" fit-font-size-for-selector="[bind-text],[bind-html]"></gwd-text-helper>
I think he can add the text fitting and font size parameters to see it will make the text look better?
<gwd-text-helper id="gwd-text-helper_1" preserve-text-style-for-selector="[bind-text],[bind-html]" fit-font-size-for-selector="[bind-text],[bind-html]" gwd-fitting-truncate="true" gwd-min-font-size-px="7"></gwd-text-helper>