@AvikB,
This might have nothing to do with the forum itself, but perhaps is just some local issue on my pc.
(but, I did present this to another forum member, and he did have a similar experience)
When I compose a message and make a spelling mistake, that word gets underlined.
When I then use the context key of my keyboard (located somewhere right of the space bar) on that word to try and see the proposed words, I used to get the context menu with suggestions for that word.
But lately that will sometimes work, but often it won't, and it will then give the standard context menu of 'Undo, Cut, Copy, Paste, etc.', and not the applicable spelling suggestion menu.
Using the right-click button on the mouse will always work though.
Is this something you might have some control over?