When you say the selection is wrong, what steps did you take to make that selection? And what did you expect to happen after taking those steps?
@PPelberg (WMF) See this video, please. I am not sure, what it should select, bud certainly not "3 words */" because after replacement it will brake link to the section. Maybe it should select all the text in summary. Is it clear now?
Can you share what you did/did not expect to see when you hover over the Zrušit text?
I did not understand why is there "Zrušit Escape" (a combination of Czech and English) and now I understand that Escape is for a key. Here at mediawikiwiki discussions is Escape in the brackets – [Escape] – and it is better for understanding, I think.
Btw. could you please see this topic? I think is it important for some editors.