Long waits for Firefox and SeaMonkey to respond to links from other applications

[Graham Perrin]

On 24/03/2019 18:51, Adam wrote:
> On Sun, Mar 24, 2019 at 6:22 PM Graham Perrin <grahamperrin at gmail.com 
> <mailto:grahamperrin at gmail.com>> wrote:
>
>     When I open a web address in (for example) Thunderbird, there's a
>     wait
>     of around fifteen seconds before the web browser, already open,
>     handles
>     the address.
>
>     Affected browsers:
>
>     - Firefox
>     - SeaMonkey
>     - Waterfox.
>
>     Not affected:
>
>     - New Moon (Pale Moon) – the waiting period is a split-second
>     - Chromium – split-second
>     - Falkon – less than two seconds.
>
>     Any ideas?
>
>
> Start thunderbird from a terminal so you can see an messages.
No message during the waiting period.
> Sounds like a tcp or dns timeout, so perhaps some addon.

Reproducible with Firefox in safe mode.

Also reproducible with a user account that I rarely touch (it was this 
account that I used for the screen recording).

Bugging multiple desktop environments, if I recall correctly I 
reproduced the issue with MATE and Xfce.