"Math Operation" produces wrong output for decimals

In particular, arguments appear to be being cast to integers before operation.

Replicate:

1. Create a new custom map.
2. Add a Dungeon Core for player 1.
3. Create 6 decimals "A" := 1.5, "B" := 1.6, "A+B", "A-B", "A*B", "A/B".
4. Create an objective with description "{0} {1} {2} {3} {4} {5}".
5. Create a new script with "On Start" trigger and four Math Operation actions:
   1. "A"+"B" -> "A+B"
   2. "A"-"B" -> "A-B"
   3. "A"*"B" -> "A*B"
   4. "A"/"B" -> "A/B"
6. After above actions add a "Set Objective Contents (Number)" updating the created objective with all 6 decimals in order.
7. Export and test.
8. Observe the objective window.

Expected: Objective window reads "1.5 1.6 3.1 -0.1 2.4 0.9375".

Actual: Objective window reads "1.5 1.6 2 0 1 1".