icons filcker

[ForsakenDelusion]

Describe the bug

When I press the key to bring up the window switcher, the icons of the hidden applications will tremble/flicker.
Screenshots / video

2024-12-29.12.59.24.mov

Steps to reproduce the bug

alt + tab when some app were hidden

Your environment

• AltTab version: 7.14.1
• macOS version: 15.1
• Other relevant info: e.g. using external keyboard, multiple monitors, etc
  I Use the 2k display, and use https://github.com/xzhih/one-key-hidpi to open the hidip on my 2k monitor.I don't know if this has any impact.

And only one app is running.

[lwouis]

Hi,

Thank you for sharing this issue

It looks like the icon is loading in low-resolution first, then in HD:

First	Then

[ForsakenDelusion]

Thank you very much for your reply. Your comment made me notice this issue, so I adjusted the resolution back to the original setting, and the bug disappeared with it. I should have thought of testing this way earlier, and I'm very sorry for the additional work it has caused you. Could this be an upstream issue? I'm not sure if pressing ALT-TAB will solve the problem. Once again, thank you for your valuable contribution.

[lwouis]

Thank you for your message

I adjusted the resolution back to the original setting

What is the exact change you made? Screen resolution? From which value to which value?

I think there may be improvements to be made in AltTab here. AltTab correctly identifies the right resolution to display in. It does it in front of the user. I think we should find a way to make that choice before showing the UI.

My issue is that I've never seen this issue in 5 years of this project. This is the first time someone reports it. I can't reproduce it myself. I'm unsure how it's possible that the image view thinks it's in such a low-resolution initially.

Could you please share more about your resolution, DPI, and if you used 1 or multiple monitor and moved the AltTab window from one to the other? Perhaps changes from a monitor to another are responsible here?

Thank you 🙇

[ForsakenDelusion]

2024-12-30.19-39-55.mov

I hope this video clearly shows all the changes I've made. When i use HIDPI,almost every time I encounter this issue, but when I revert to the default resolution, everything works fine (note that the first time calling alttab after switching back from HIDPI to the default resolution, the icon flickering problem still occurs, but I believe this is just a normal phenomenon following the resolution switch, and it won't happen again in subsequent uses. I hope I've described it clearly.）I'm using a single monitor and only have one window space. However, there's something to note: Apple's support for 2K monitors in HIDPI is not ideal. So, I used this project: https://github.com/xzhih/one-key-hidpi. I saw in it that it mentioned, "The logo scaling may not work because the high resolution is fake." Could this be the problem? But I think the "logo" here refers to the Apple logo on the Mac startup, not the app icon. However, there might be some connection between the two, so I'm reporting this situation to you. Thank you very much for your attention to this issue.

[lwouis]

Thank you for your message

I'm using BetterDisplay Pro to have HiDPI resolution on my Dell external monitor. I think I addressed the same problem you faced, having a non-Apple external display, and wanting crisp resolution on it.

Could you please try out BetterDisplay Pro, and see if you still face the issue with this tool, instead of one-key-hidpi? I'm wondering if the issue you experienced could be due to the tool doing something a bit exotic, or not.

If you can reproduce the issue with BetterDisplay Pro instead of one-key-hidpi, I think it will confirm that there is an issue with AltTab.

Thank you

[ForsakenDelusion]

Unfortunately, the issue seems to have become more apparent😿.

2024-12-31.02-13-41.mov

[ForsakenDelusion]

Unfortunately, the issue seems to have become more apparent😿.不幸的是，这个问题似乎变得更加明显了😿。

2024-12-31.02-13-41.mov

In the next two days, I'll try to install BetterDisplay Pro on a new macOS to test it and hope my test results will be helpful in locating the bugs. But for now, I've got to worry about my final exam tomorrow 😵‍💫. Thank you for your attention to the issue, and I wish you a wonderful day.