Font replacement during preview

[VictorKrs]

Good afternoon!
Suddenly there was a problem when viewing the site in the "Preview in Browser". The site uses an Open Sans font, and in Preview in Browser it is replaced by Times New Roman.
Please tell me what the problem is?

[Pablo]

To be able to help you, I need a DEMO project (.wbs file) so I can see all your settings.

I do not need the complete project because that will only take more time to figure out what you have done.
Basically, I just need a small project with one page and object(s) that are relevant to your question.

Note that I cannot see what you have done based on the published page (HTML), because the software has thousands of options and millions of possible combinations.
So, there is no way to know which options you have used by looking at the HTML only.

For further details about how to share a project file, please see this FAQ:
viewtopic.php?f=10&t=82134

[VictorKrs]

Ок!
Link to the project: https://cloud.mail.ru/public/gjn4/yq4S1ZuZ9

After preparing the project for sharing, the text did not change the font to Times New Roman everywhere.

[Pablo]

Your project seems to work correct,
What are the exact steps to reproduce this behavior?

Are you sure this is not an issue of your browser?

[VictorKrs]

Everything worked fine. Last night I added a Tooltip to the image. I checked in the preview, everything looked as it should. This morning I decided to look again and suddenly the font of the entire site was suddenly replaced by Times. After preparing the project file, as I wrote in the previous post, part became Open Sans and part Times.
Now I have placed the site on the hosting, everything is displayed perfectly. It looks like a problem with Firefox.

[VictorKrs]

Checked in MS Edge. Unfortunately the problem is the same:(
I apologize for my unprofessional fantasies, it seems to me that some code (for example CSS) generated by WWB is not processed by browsers...

[Pablo]

If it suddenly stopped working then it's unlikely that it is directly related to the software. WWB will not randomly start using different fonts.
So, either you have changed something yourself or it an issue with your browser.

The project you have shared is fine.

[VictorKrs]

OK! Thank you for your help! I will deal with this browser problem.