Unwelcome change to Thunderbird

[Jim]

On 4/22/20 10:41 PM, Tommy Trussell wrote:
> On Wed, Apr 22, 2020 at 9:05 PM Jim <jf_byrnes at comcast.net> wrote:
> 
>> Mint18
>> Thunderbird 68.7.0
>>
>> I remember seeing an update to Thunderbird awhile ago but never shut
>> Thunderbird down until today. When I restarted it the Threads Pane and
>> the Folders Pane now look like they are double spaced. So now I get half
>> as much information in the same space.
>>
> ...
> 
>>
>> It sure is a pain when they make arbitrary changes to such a noticeable
>> part of the UI.
>>
>> Anyone know how to get rid of the double spacing?
>>
>> Thanks,  Jim
>>
>>
> I'm not seeing it in Ubuntu Eoan 19.10 (Gnome). I also didn't see it on my
> other system running Ubuntu Bionic 18.04 (Gnome).
> 
> I know next to nothing about Mint. Is there a place you can ask there?

There is but it is much more active here and I've come to trust the 
quality of help on this list. I will post to the mint list.

> Maybe there's an unfortunate interaction with a Mint theme. In fact, you
> might try some different desktop themes and see if it changes anything.
> 

I don't think that is the problem. I created an new thunderbird profile 
and the problem does not show up in it.

I compared the config files for both profiles. I filtered on a number of 
things like height, padding, margins and a few I don't even remember and 
they are all identical.

I have been experimenting with the userChrome.css file. I can change a 
lot of things. I can change the background color, the font and the font 
size, I can put dashed lines between rows, I can even make the line 
height bigger. I can not make the line height smaller so it does not 
look like it is double spaced.

It seems like there is some overriding setting for a minimum row height 
that cannot be changed.

Regards,  Jim