The Bugs forum thread is not just for reporting bugs to the administration. It is intended to solve technical problems encountered in the game. Before creating a topic, you should check to see if there is a topic with the bug that you want to report. In order to report bugs or glitches, you can create a new thread instead of writing in the existing threads. Topics with the title Bug, Glitch will not be considered. Try to put a brief description of your problem in the title of the topic. If the problem described above occurred on another account, be sure to specify the account where it occurred.
You have 8 levels of evolution, each level increases speed by 5%. 5 * 8 = 40%. Basic speed is 300. It should be multiplied by 40 and divided by 100 to obtain the rate 120, as it shown in the first screenshot.