Vertical alignment and kerning issues with Vietnamese diacritics in traditional altar descriptions

I am developing a digital catalog for traditional Vietnamese altars (Bàn Thờ) at https://vach-ngan.com/. While using Google Fonts (specifically Roboto and Playfair Display), I noticed that the Vietnamese diacritics (dấu tiếng Việt) on specific words like "Bàn Thờ", "Gỗ Gụ", and "Canh Nậu" are not vertically aligned correctly when displayed in bold headers.