Thanks for your update!!
Let me explain you the issue 4 now,
Issue 4: when I coding assembly instruction in the second line by hitting Enter from the first line, I'm getting the unwanted spaces between each character I code.
Steps to recreate:
1. Open a file in the slickedit editor.
2. Select the file mode as IBM HLASM ( Format->select mode->IBM HLASM ) and
3. Hit <tab>+<tab> and code any instruction say MVC TEST,TEST then hit enter
4. Type MVC TEST1,TEST1 - here when you type this instruction you'll get the unwanted spaces in between the instruction(This is the issue).