When placing a torch in the 1.2.1 update, the surrounding blocks do not update leaving some bad shadowing. Hope this helps and that you can fix this issue quickly! Thanks!
Update by @unknown:
As a temporary workaround until this issue is fixed, you can turn off the smooth lighting option in the video settings to make things brighter.
Linked issues
is duplicated by 27
MCPE-26752
torches not putting out enough light
Resolved
MCPE-26826
Shadows In My Cave
Resolved
MCPE-26843
light levels are very low, game too dark
Resolved
MCPE-26871
Light level of items seems to have diminished
Resolved
MCPE-26936
Lighting glitch on all devices after 1.2.1 patch
Resolved
Attachments
Comments 27
Confirmed on Windows 10 since 1.2.1.
Placing a torch makes little difference to the area around it, even with the brightness at 100%:
[media][media]
Soo, is this issue a bug and will get fixed or is it an intended feature?
It's 18 days now and no fix, also it didn't got "added to internal bug list".
It is one of the bugs listed in the changelog for the 1.2.5 beta build (available for Android devices): https://feedback.minecraft.net/knowledgebase/articles/1814653-minecraft-android-beta-1-2-5-build-1
I have noticed the same thing. All edges where blocks intersect don't appear lit properly, and lighting on segmented blocks such as fences show separate shadows on each rendered cuboid.