Where is the docked bar positioned?

I have posted multiple times and every time majestically ignored, that I cannot see the thumbnails preview when the taskbar is vertical. One other user had also confirmed having the problem and nothing has happened.

I have installed the beta and now the latest 2.51 on an older backup laptop and the issue is still the same.

I have tried to debug the issue alone through the different forums about not seeing the thumbnails but has not changed anything, especially since they work perfectly with the horizontal taskbar, at the bottom or at the top.

Here is a video showing the difference betweeen vertical and horizontal, since it seems that you don't believe me:

https://www.dropbox.com/scl/fi/yr1uwp1ud9qq96ivczcnm/Start11VerticalNothumbnails.mp4?rlkey=lhoj7qdejilvcm7ss7vo0o0pa&st=us9s958s&dl=0

Also I would like to remind that during a beta update the option for vertical taskbar was not showing and you made me do multiple uninstalls and installs, just to read later that the beta erroneously was only accepting Win 24H2 and not 23H2, or something similar.

So to be clear the ball is in your camp to try to find the problem.

I have repeated the uninstall reboot procedure multiple times all the way through the diffent beta updates and it was a waste of time at every attempt. As I wrote I also tried with an older laptop, slightly older Windows version. Problem still remains and only with vertical taskbar. I am not a developer and don't have dozens of different systems to try it on, but on 2 different ones it does not work. I am certain the problem is not unique with me and plenty of others simply do not bother with the vertical taskbar.

I mean, I think I share the same issue on my 2nd PC... but I never use that Windows feature to begin with so I never notice when it's not there.  It had a clean install of Windows recently and the first version of Start11 it ever had was 2.49.2...  seems to have the issue present in 2.51.2.

I tried

I tried the purge, another 30 minutes of my life wasted. I had to deactivate the antivirus and online threat protection (Bitdefender), then somehow Start11 (sddisplay.exe ) got in the blocked apps from the firewall and could not re-activate it, took a couple of minutes to fix it and after all these, the problem with no thumbnails remains exactly the same. I am fed up doing the beta tester (v2.50 is not even beta, although pretty rushed in my opinion from the beta stage).

Stardock should do its testing and for my case there is NO usable vertical taskbar, if I had to buy the software for this function, I would be asking for my money back. I wasted enough time, I like the program and my OCD does not let me stop trying to see if the broken functionality is corrected, but it is double irritating to write to a wall and sound like a broken record.

I am not on trial, you are not paying attention to my comments. I have bought a 5 pack licence since the launch of v.2 and have also the v1.... I  am just explaining since ever that since the launch of the vertical taskbar beta (2.49?) it never worked properly on my system and I am not the only one, but most people do not care. Again the ball is at Stardock to correct the issue. I have spent too much time installing/uninstalling and now purging. I want to emphasize that if I were a new customer drawn by the new vertical taskbar announcement I would be really dissapointed.

EDIT: So to be clear, even at the latest beta version 2.51.2, after multiple installs0-/uninstalls and now a purge of the previous version, the vertical taskbar thumbnails do not work.

Thank you. I sent to you my Start11 backup settings with a private message.

Basically the only software I use aside of  Start11 is Displayfusion. But when I boot the laptop Displayfusion is not starting up and I load it only when docked with multiple monitors. The behavior is the same on the laptop monitor, or when docked with multiple monitors. The laptop is an LG Gram, the 2nd laptop was also an older model of the same brand.

I have also Windhawk with only one mod but I tried it also without it, and it is not installed in the old laptop. I forgot Powertoys, but nothing activated like Fancy Zones or anything that would impact the taskbar.

Yes. Some of the quotes can get really long. Just mention the Reply #(s) you are referring to.

I understand the non english translations for the installer itself have been removed now until this can be resolved.

Thanks for letting us know.

Will there be window app preview for vertical taskbar when hovered?

I just did a clean uninstall using Bulk Crap Uninstaller, which also ran Start11 Uninstaller program, and then deleting some registry key. I then proceeded to restart the computer, and then download the latest beta. The result is still the same. No window preview when hovered for vertical taskbar. 

My system is Microsoft Windows Version 24H2 (OS Build 26120.3000) using Beta V2.51, Dev Insider

Performed additional testing:
3 monitors, pyramid style.  Primary on top.
(Top monitor connected to an AMD video card, bottom 2 monitors to the built-in Intel chip/ports)

Enhanced taskbar displayed only on primary, and configured to display at the top.
(same behavior when enhanced taskbar is disabled)

Windows 11 24H2 Build 26100.2894 (up to date)
Dell OP-7000 (up to date)
AMD RX550 (up to date)

Issue - when I right click a running app in the taskbar, no menu appears.  If I just hover, I get the proper preview thumbnail - but right click, nothing.

Enabled taskbars for all monitors, still displayed at the top for all of them.  When I right click the app icons in the taskbars on either of the two bottom monitors the menu's drop down like they are supposed to but flicker for roughly 5 seconds before becoming stable.  So top monitor, no right click fly out menu at all for app icons, bottom monitors it appears but flickers then becomes stable.

When I set the taskbar to display at the bottom, everything is stable and behaves as expected - either just the top monitor or all three.

I own a 5 pack, have it installed on other systems, all with just a single monitor running either AMD or NVIDIA graphics cards, one case just the built-in Intel video.  All four other systems display taskbar at the top and it performs as expected.

So it's just my primary work PC causing the issue.  As mentioned before...this was working just fine until update 2.5.x.  And it has happened before, don't remember what V2 release but it eventually disappeared after one of your updates.  (Not after a PC or graphics updates but one for Start11)