Created attachment 75381 [details]
2nd sheet (basic Track data) shows error at F2; spreadsheet contains other errors.

Problem description: After editing a formula in a spreadsheet created in 3.4, the values is no longer seen but the formula is displayed.

Steps to reproduce:
1. Open spreadsheet created in 3.4
2. Edit a formula (any change)
3. Cell will no longer show value but now shows formula.
4. Go to menu:tools/options, Window:Options/LibreOffice Calc/View...
5. Verify Display/Check-box:Formulas is not checked.
6. Toggle Check-box:Formulas to see if aberrant behavoir change.
7. Observe behavior 3. unchaged. 

Current behavior:
1. Open spreadsheet created in 3.4
2. Edit a formula (any change)
3. Cell will no longer show value but now shows formula.

Expected behavior:
1. Open spreadsheet created in 3.4
2. Edit a formula (any change)
3. Cell show value not formula.

Same behavior in 3.5, bug filed/

              
Operating System: Linux (Other)
Version: 4.0.0.3 release
Last worked in: 3.4.6 release