We have recently upgraded our M2.4.3 version and have noticed that the last modified header for all our web pages is now fixed at the exact upgrade date of our store across all web pages even newly created pages.
I believe m2.4.3 is now running out of /pub directory
Does anyone know what could be causing this issue?
We run Apache with Varnish and Nginx SSL termination (engintron)
We did not have this issue proper to upgrade