Webpage test user agent string missed to handle one of user agent string

[pmohite@ancestry.com]

Hi team.
we see webpagetest is not passing User agent string correctly for one of my page
https://www.ancestry.com/cs/offers/freetrial

for this page deksktop and mobile view is different .
mobile view is correct when actually renderred by real mobile device or chrome lighthouse audit .

but when simulated using wpt test , its using different user agent string.

I understand that by passing custom user agent string we can make this work (which is actually working ), but i think instead of bypassing what actual user using User agent just to get our desired results will not be right approach.

so please consider this as an defect


wrong view :
https://www.webpagetest.org/result/20030...e57ff46b1/

(user agent : Mozilla/5.0 (Linux; Android 4.4.4; Nexus 7 Build/KTU84P) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.146 Mobile Safari/537.36 PTST/200226.180231)

correct view :

https://www.webpagetest.org/result/20030...704caa75a/

(user agent : Mozilla/5.0 (Linux; Android 6.0.1; Nexus 5 Build/MRA58N) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3694.0 Mobile Safari/537.36 Chrome-Lighthouse PTST/200226.18023)