Button presses during lag are applied in an incorrect order during while lagging.
by exerceo from LinuxQuestions.org on (#6JRGE)
While the computer is lagging, keystrokes are buffered so they are applied after the lagging is over. This means that when the user types a word while the computer is lagging, no letters appear on screen during the lag, but the letters typed during the lag appear after the lag is over.
There is one problem: sometimes, when pressing keyboard combinations, the order of keystrokes goes wrong.
For example, when pressing CTRL+V to paste the text "456" after manually typing "123" during a lag, the resulting text after the lag is "456123", while it should be "123456".
Another example: When pressing button combinations in web browsers during a lag, the order is reversed. Pressing Alt+Home goes to the home page and pressing Ctrl+Tab goes to the next tab. When doing so during a lag, it first goes to the next tab and then puts the next tab into "home".
This is one of those annoyances that first seem minor, but become significant due to repetition.
There is one problem: sometimes, when pressing keyboard combinations, the order of keystrokes goes wrong.
For example, when pressing CTRL+V to paste the text "456" after manually typing "123" during a lag, the resulting text after the lag is "456123", while it should be "123456".
Another example: When pressing button combinations in web browsers during a lag, the order is reversed. Pressing Alt+Home goes to the home page and pressing Ctrl+Tab goes to the next tab. When doing so during a lag, it first goes to the next tab and then puts the next tab into "home".
This is one of those annoyances that first seem minor, but become significant due to repetition.