replace in block selection

I'm using 5.0.3 (377)

First issue: replace a string with a longer string:
My text looks like:
r,7201,1,1,1,1,1,1 ! Quadrant 1
r,7202,1,1,1,1,1,1 ! Quadrant 2
r,7203,1,1,1,1,1,1 ! Quadrant 3
r,7204,1,1,1,1,1,1 ! Quadrant 4
^ ^
When I block select columns 8 to 18 and replace all "1" by "0.1" I get:

r,7201,0.1,0.1,0.1,1,1,1 ! Quadrant 1
r,7202,0.1,0.1,0.1,1,1,1 ! Quadrant 2
r,7203,0.1,0.1,0.1,1,1,1 ! Quadrant 3
r,7204,0.1,0.1,0.1,1,1,1 ! Quadrant 4

only 3 of the selected "1" are replaced

Second issue: replace a string with a shorter string:
When my code looks this:
r,7201,0.1,0.1,0.1,0.1,0.1,0.1 ! Quadrant 1
r,7202,0.1,0.1,0.1,0.1,0.1,0.1 ! Quadrant 2
r,7203,0.1,0.1,0.1,0.1,0.1,0.1 ! Quadrant 3
r,7204,0.1,0.1,0.1,0.1,0.1,0.1 ! Quadrant 4
^ ^
When I block select columns 8 to 18 and replace all "0.1" by "1" I get:

r,7201,1,1,1,1,1,0.1 ! Quadrant 1
r,7202,1,1,1,1,1,0.1 ! Quadrant 2
r,7203,1,1,1,1,1,0.1 ! Quadrant 3
r,7204,1,1,1,1,1,0.1 ! Quadrant 4

only 5 of the selected "0.1" are replaced

Thank you for information.
I guess authors of the editor component don't count with column block replacing.
When you replace, replaced text will move rest of the line outside of block.

From my opinion, I see big problem with column block and replacing with confirmation. How it should behive, when you start replace and confirm one by one. The column block is defined before, it can't "increase" in replacing process and have different size for each line.

You can use workarround and replace with backward direction.