It seems the way textures interact with base torches doesn't work the same for all torches. The base torch geometry is outdated compared to the Redstone and soul torches. Other torch geometries allow for textures to exceed the face and base torches should be able to do that too.
It’s the redstone/soul torch model that is bugged: MCPE-15806 and MCPE-72446. I’m not sure why you’d say the regular torch is “outdated”.
You may be able to get the regular torch to render the way you want by setting it to use a redstone torch blockshape. https://wiki.bedrock.dev/blocks/block-shapes.html