Scramble gives you the letters of the answer in the wrong order and asks you to build it. It is worth 3 XP per correct answer, more than any other mode, because there is no way to half-know a spelling you have to construct one tile at a time. You either have the word or you are guessing at letter positions.
Why spelling is worth testing separately
You can recognise a written word for months without being able to produce it. Reading is a matching task and your eye fills in the gaps, which is why a word can look right in four different misspellings.
Typing catches some of that, but the typo tolerance in Write mode deliberately forgives a single slipped character on longer words, because a slipped finger is not a memory failure. Scramble removes the ambiguity from the other direction: every letter you need is in front of you, so getting it wrong is not a typing problem.
What Write mode forgives, and what it does not
Spaces do not get a tile
The letter pool is built from the answer with whitespace stripped out, so a two-word term like "give up" or "kalkış saati" gives you the letters and no space tile. Your built string is compared with whitespace collapsed on both sides, so you are never asked to produce a space you were not given.
This sounds like a detail and it is the difference between multi-word terms being playable and being impossible. A comparison that expected the spaces would reject every correct answer on every phrase in your set.
Terms with alternatives
If a term lists more than one option, such as a definition written as "run / jog", only the first is turned into tiles. Scrambling the whole string would put a slash tile in the pool and leave you assembling a puzzle that has no sensible solution.
So a set full of slash-separated alternatives will quiz you on the first one in each. If you care which alternative you are drilling, put the one you want to learn first when you write the set.
What counts as correct
The comparison folds case, diacritics, the dotless and dotted i, and whitespace. So building the word without its Turkish characters is accepted here for the same reason it is accepted when you type it — the keyboard you have should not decide whether you knew the answer.