Sounds like you have show white space switch on in your options/preferences. If so those dots/tabs are just display artefacts Visual Studio is not saving them in the file.
Banfa
Practically a Master Poster
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The place to turn this on/off is Edid | Advanced | View Whitespace.
Keyboard shortcuts are Ctrl+R followed by Ctrl+W, or Ctlr+Shift+8. These toggle whitespace on or off.
vmanes
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