So I'm getting fairly high level, and have gotten in the habit of bombing each wave panel to summon extra monsters for more experience.
Problem is, every 1/100 gem bombs (or so), the game thinks I want to skip to that wave, instead of gem bomb it. I SWEAR I'm still holding down the shift key while bombing the panel. Anybody else seeing this problem? It's been driving me crazy.
This has happened to me as well. for me its only once every 10-15 waves when I'm bombing 50-150 times per wave. The only real solution for me was to only bomb the next two wave so that if I did accidentally call it, I would still survive. Also, I am fairly sure if you have the game paused while bombing and accidentally bomb, say, the fourth wave down, if you then click the first incoming wave, it will only call that wave.
To not send waves when bombing and shift unexpectedly deactivates, go to "Options" menu, scroll down through the huge list of options, and find the option that turns sending waves early from left click to right click. It's a life saver. I did that option since day 1 and omg, without it I couldn't be this level, my shift key is ridiculously problematic lol.