Regarding your font issue, try fiddling with Options>Editor>Formatting display style. I think 'Show all tags but do not show formatting' will work for you.

What regards the hyphen issue, most probably this is because of the font in your source document. There are some fonts that make hyphen look even longer than en-dash (e.g. Bat angChe, Gulim or GulimChe). If you disable showing formatting, Studio will override your source doc font and apply the one you set in Options.

Thank you, Stepan, for your reply but I don't see "Formatting" under Editor. I'm using Studio 2019.

However, I suppose this will not change much. If your target file is correct, you will have to live with this slightly imperfect view in Studio.

Also remember that you select fonts individually for your languages. That is, if you want to see a font both in source and target, you should select and apply it for two languages.

Thank you, Jerzy. This does do the trick and solves the hyphen issue of the target text, but turning off the formatting of the source text is also somewhat inconvenient. So, I'd need to choose either of them and live with it.

Reiko Ando said:

but turning off the formatting of the source text is also somewhat inconvenient.

Really? I see it exactly the other way round. Seeing all the formatting including the font face (which very often is not present in my system, which leads to many problems) does disturb me much. I need to focus on text and the formatting is of very secondary meaning. On top of this, properly created documents do use only very little of local formatting. 

Reiko Ando said:

but turning off the formatting of the source text is also somewhat inconvenient.

Really? I see it exactly the other way round. Seeing all the formatting including the font face (which very often is not present in my system, which leads to many problems) does disturb me much. I need to focus on text and the formatting is of very secondary meaning. On top of this, properly created documents do use only very little of local formatting. 

It depends on the source text. When the source text is properly formatted, it helps understand the context so I don't need to refer to another document (PPT, PDF, etc.) for the source text as often. In other cases, that's true the formatting may be disturbing due to undesirable font or color, etc., so I may want to focus on the plain text without formatting.