Never seen mention of this before.
I've seen various other comments on other issues, but not this.
https://www.ipmsstockholm.se/home/spitfire-pr-mk-xix-in-detail/
Airfix kit
Note this is an early XIX which was not pressurised.
The canopy maybe not bulged enough, but looks to be the right length, compared to other airframe features.
The XIX is not simply a derivative of earlier high back versions, but part of the PR family.
The curved screen is the standard PR screen, note the rear section on the pressurised airframes is deeper.
Rob Taurus it seems just make vac form replacements, I don't know they bother correcting any issues.
If you are doing a Spitfire family, the Falcon Spitfire special set maybe worth considering
https://www.hannants.co.uk/product/FNCV4172
Comparison photos really help if you are going to ask questions like this.
The Airfix XIX is not a great kit, there are some simple modifications I thought helped it
https://www.britmodeller.com/forums/index.php?/topic/235073488-spitfire-pr-xix-airfix-72nd-as-i-thought-it-would-be-easy/
The main comment was the wing chord, an easy fix, and blank wheel wells and the club like prop blades need work, and the seat seems too high, but all of this is in the link. The canopy came up well with a Kleer dip
If it's the same as their 1/48th, you will need a new spinner, the rest is do-able but it's a load of work. The Sword kit is limited run but seems to be better.
I'm sure various other members will add in their thoughts.
@The wooksta V2.0 @Giorgio N @Beard ?
HTH