Hi again,
i got a answer from the support now. Seems the problem is in your template. The problem is, real almost every template work fine in pinegrow, except yours. (Your old Version worked too, your new one doesnt) Here we go with the answer:
Hello Matthias,
Thanks for the step by step instructions.
Because Pinegrow is not a page browser, but a code editor with visual features, its parser is much stricter on the quality of syntax and code validity of HTML templates than a regular web browser. In the vast majority of cases, if there are no syntax errors in the code, an HTML document will open and be interpreted without any problems. (this kind of feedback is VERY rare).
If there are errors in the code, there is a good chance that the parser will fail and not produce the expected result. Hence the difference between what you see when you open the page in Chrome or Firefox and what you get when the page is loaded in Pinegrow.
Regarding your HTML template, a quick analysis from the team showed us that the nav is malformed. It is missing a closing li just before the final ul - there are 522 lines of code in the main body of that navigation and for some reason the JS doesn't seem to be operating correctly.
Note: unfortunately, despite it's dedicated option (Page > Check for HTML error) Pinegrow cannot detect this error and gives an approximate result.
We regularly work on improving the parser to handle special cases of code errors, but unfortunately there will not be a specific fix in a very short time.
Hope you can offer a solution, pinegrow wont.
Bye Matthias