Running the latest git I started getting the following message: "There are two actions (Find in Files..., Normal Fraction - \frac{}{}) that want to use the same shortcut (Alt+Shift+F). This is most probably a bug. Please report it in bugs.kde.org" Plasma desktop: 5.8.6 Plasma-framework: 5.31.0 Applications: 16.12.2 In addition, if you click the box "Do not show this message again" it has no effect and shows up next time again.
The last part of my report concerning clicking "Do not show this message again" and seeing no effect in subsequent start seems to be fixed with plasma framework 5.32.0. The main error message still appeared though.
Alt+Shift+F is a new shortcut in the text editor component. Kile already used this, so there is now a conflict. I suggest to configure the shortcuts and change one of them.
I cannot reproduce this with master 5fdca29bd30a97e9ee992b307fd81808df6a8547. Feel free to reopen if you find that the problem still occurs.