After entering a formula in the input line, if you go back to that cell and click again on the input line to change the formula, the addresses of cells/cell ranges in the input line are not coloured and the corresponding cells/cell ranges are not highlighted with coloured borders. This makes it impossible to drag cells/cell ranges, in addition to making evaluating formulas very difficult. This bug was not present in 5.3.6.
Created attachment 137309 [details] Example of cell address not coloured and cell border not highlighted
*** This bug has been marked as a duplicate of bug 113179 ***