First of all, perhaps the problem is just on the computer I’m using, i.e. the settings for Yahoo.
When I’m reading an e-mail from the inbox, the text goes from left to right across the whole screen, except for the folders column on the left. However, when I select reply or recall a text from Drafts, the space available for use is only the left hand half of the screen & the right hand half is blank / not in use by reply.
Where are the settings for page format in Reply/ Forward/ Drafts in Yahoo ?
NB. This problem does not occur in live.com.