Our users are experiencing an issue that I was able to recreate on Kendo demo page (https://demos.telerik.com/kendo-ui/spreadsheet/index)
All actions occur in the cells (not the function line):
1 - Within a cell, begin typing a function (for example: = average ), the dropdown appears and the function can be chosen
2 - Go to any other cell, type any letter and press Tab (not Enter). A function from the dropdown list is auto-populated & replaces the letter (or word). Type two words in a cell and hit tab - the second word is replaced by the function name; the same happens when a number then a word/letter is typed in a cell.
It does not happen when only a number is entered or a number is the last character typed in a cell. It also does not happen when Enter is hit instead of Tab.
Thanks