ips glow is reduced when you increase distance of your eyes from monitor and bleed will be noticable. 32 inch monitor would require big distance to not see ips glow and if you are close it will cover bleed but depends on position.
If you open monitor and maybe touch screws bleed could change. I am not sure can it change during heating and cooling but during that process sound can come from monitor.
I have backlight bleed in one corner but its fine for me. I think backlight bleed will not change over time. If I apply pressure on plastic near area with bleed, backlight bleed area will be lower in my case.
lowering brightness can reduce bleed and hdr option will increase brightness its why you can notice it.
dark scenes are weakness of ips monitors.
I know some games have hdr support but can you share why you use it and is it worth it?