Looks like a user error. Definitively not a general Problem, not reproducible with  "LibreOffice 3.6.3.1” English UI/ German Locale [Build-ID: f8fce0b] on German WIN7 Home Premium (64bit). I created a new spreadsheet, inserted numbers into A11:G25, selected C17:E17, menu 'Edit -> Delete Cells' all options were available, "Shift cells up" preselected.

Not a valid bug report, so INVALID.

@reporter:
Thank you for your report – unfortunately important information is missing.
May be hints on <http://wiki.documentfoundation.org/BugReport> will help you to find out what information will be useful to reproduce your problem? If you believe that that  is really sophisticated please as for Help on a user mailing list
Please feel free to reopen the bug report if you can contribute some additional information:
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- Attach a sample document (not only screenshot) or refer to an existing 
  sample document in an other Bug with a link; to attach a file to this 
  bug report, just click on "Add an attachment" right on this page.
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  problem better than a text comment. Best way is to insert your screenshots
  into a DRAW document and to add comments that explain what you want to show
- Contribute a document related step by step instruction containing every 
  key press and every mouse click how to reproduce your problem 
  (similar to example in Bug 43431)
– if possible contribute an instruction how to create a sample document 
  from the scratch
- add information 
  -- what EXACTLY is unexpected
  -- and WHY do you believe it's unexpected (cite Help or Documentation!)
  -- concerning your PC 
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  -- concerning your LibO localization (UI language, Locale setting)
  –- Libo settings that might be related to your problems 
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     before you launch LibO (please see
     <https://wiki.documentfoundation.org/UserProfile#User_profile_location>),
     here I really really doubt that user's problem might be related
  -- everything else crossing your mind after you read linked texts

I can reproduce this behaviour in v6.3.5.2 by enabling Track Changes first.

If Track Changes is enabled, "shift cells up" and "shift cells left" are both greyed out in the Delete Cells dialog. 

There may be a reason for this. If so then this restriction should be mentioned in the help for Delete Cells.

Reproduced in 6.3:

Version: 6.3.6.2
Build ID: 2196df99b074d8a661f4036fca8fa0cbfa33a497
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3; 
Locale: en-AU (en_AU.UTF-8); UI-Language: en-US
Calc: threaded

As well as a recent trunk build:

Version: 24.2.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: baecfd21797310bb15ab98ca3962445d99e397db
CPU threads: 8; OS: Linux 5.15; UI render: default; VCL: gtk3
Locale: en-AU (en_AU.UTF-8); UI: en-US
Calc: threaded

Same in OOo 3.3.

"New" is the correct status. ("Reopened" is only used if "Fixed" was used before.)

As per tdf#73335, it seems this behavior is expected.  I guess implementing track changes for shifting cells was more work than just disabling it.