Send Esc right after hotkey routine is over

I'm making code that Send Ctrl (+Shift) + Tab with my mouse button for the purpose of exploring tabs in chrome and other software that support tab. And my hotkey is ~RButton & Wheelup/down. But the problem is, when I release RButton after the hotkeys, it returns context menu and this is bothering me. My first edition of the code is like below.

    ~RButton & Wheelup::    ;Because of RButton included, it returns context menu
        Send, ^+{tab}
    return

    ~RButton & Wheeldown::
        Send, ^{tab}
    return

And this is the 2nd edition of the code for removing context menu :

    ~RButton & Wheelup::
            Send, ^+{tab}
            KeyWait RButton
            Send {Esc}
    return

~RButton & Wheeldown::    ;Similar to above
...

This code successfully remove context menu but while first edition works smoothly (it returns tab move every Wheelup/down while holding on RButton), second edition returns tab move only once even when I keep scrolling. I think KeyWait command interrupt re-executing tab move hotkey. So I made 3rd edition with external function :

​

    SetTimer RButtonUpCanceler, -1
    SetTimer RButtonDownCanceler, -1    ;auto-execute code

     ~RButton & Wheelup::
        Send, ^+{tab}
        CtrlTabIndicator := 1    ;Vairable to check if Ctrl Tab is execute recently
        SetTimer, CtrlTabExpire, -5000
    return
    ~RButton & Wheeldown::    ;Similar to Wheelup
    ...

    CtrlTabExpire:
        CtrlTabIndicator := 0
    return

    RButtonUpCanceler() {    ;Function that remove context menu by sending Esc key
        KeyWait RButton, D
        KeyWait Wheelup, D
        KeyWait RButton
        if CtrlTabIndicator
            Send {Esc}
        SetTimer RButtonUpCanceler, -1
    }
    RButtonDownCanceler() {    ;Similiar to RButtonUpCanceler
    ...
    }

But I don't know exactly why, this code doesn't send Esc and context menu still pop up after ctrl tab hotkeys. I don't care that much which way to solve this problem, but my trial all failed. Anyone can tell me the problem?