How to change the css of ionic large title during page navigation

Hi,

I’m creating an App that supports multiple language. But when the language is changed, the default font-size of the iOS large title (34px) is too large so that the title cannot be fully displayed. I modified it to 32px.

But the issue I’m facing is that during the page navigation, the font-size is still the default setting. So what I current got is that during page navigation, it’s 34px. And once it’s completed, the font will be 32px. I’m wondering is there any way that I can change the css of the large title during navigation period?

I found this https://github.com/ionic-team/ionic/pull/20862 that may related to my issue. But I don’t know what should I do to build the project that based on the modified ionic code.

Thanks in advance.