As a certified newbie I am trying to understand how the DOSBox Debugger works - and I am confused 😕

According to Fizzban´s guide:

• F10 steps over the next instruction (does not trace into calls)
• F11 traces into the next instruction

I expected that F11 would allow me to single-step each emulated CPU instruction as displayed in the code view window, but I can not make head nor tail of the why the EIP is jumping all over the place 😠

Example: I press PAUSE/BREAK, and the code view shows:

10045:723A4  8A03             mov  al,[ebx]               ds:[001A2A6A]=030C0
20045:723A6  43               inc  ebx
30045:723A7  33C9             xor  ecx,ecx
40045:723A9  FF24852C620E00   jmp  near dword [000E622C+eax*4](down)
50045:723B0  80F201           xor  dl,01

When I press F11 I expect the 'mov al,[ebx]' instruction (highlighted in the code view with green) to be excuted and the EIP to move to the next instruction ('inc ebx').

But instead I end up at 0045:7248B which reads:

10045:7248B  41               inc  ecx
20045:7248C  41               inc  ecx
30045:7248D  41               inc  ecx
40045:7248E  41               inc  ecx
50045:7248F  D1E1             shl  ecx,1

Again, I would expect an F11 to do the increment and move the EIP to 0045:7248C, but NOOOO!!!! The next instruction is a 'repe movsw' at 0045:724BC 😕

I am not prone to swearing, but I really feel like saying WTF is going on here?