win copy duplicate.

[xc12550108]

How frequently does the bug occur?

Always

Description

win复制截图，有复制成功的音效（偶尔会有两次音效），却在剪贴板里出现两次图片。在mac上黏贴会出现两个一样的图片。

Stacktrace & log output

Can you reproduce the bug?

-- select --

Reproduction Steps

No response

Version

2.1.5

OS

2.1.5

[xc12550108]

crosspaste.log

[xc12550108]

开启debug后的
crosspaste.log

[CompileFuture2024]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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After turning on debug
crosspaste.log

[xc12550108]

补充一下
第一次：win复制截图，有复制成功的音效（偶尔会有两次音效），却在剪贴板里出现两次图片。mac黏贴不了（无任何反应）。
第二次在win上复制截图后，在mac上黏贴会出现两个一样的图片。

[CompileFuture2024]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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Just to add
The first time: when copying a screenshot in win, there is a sound effect of successful copying (occasionally there will be two sound effects), but the picture appears twice in the clipboard. Mac cannot paste (no response).
After copying the screenshot on Win for the second time, two identical pictures will appear when pasted on Mac.

[xc12550108]

crosspaste.log

[xc12550108]

复制win一个pdf的文件，mac没有任何操作，但是黏贴了
https://github.com/user-attachments/assets/1b2c409a-e621-422d-b54d-fdde6993e43c

[CompileFuture2024]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

---

Copying a pdf file from Win, Mac does nothing, but it is pasted.
https://github.com/user-attachments/assets/1b2c409a-e621-422d-b54d-fdde6993e43c

[guiyanakuang]

Desktop log (Windows side)

2026-07-06 16:11:10,392 DEBUG [DefaultDispatcher-worker-11] c.c.p.w.WindowFocusRecorder [WindowFocusRecorder.kt:112] Active window changed: title=win copy duplicate. · Issue #4621 · CrossPaste/crosspaste-desktop - Google Chrome, className=Chrome_WidgetWin_1
2026-07-06 16:11:10,961 DEBUG [DefaultDispatcher-worker-14] c.c.p.DesktopTransferableConsumer [TransferableConsumer.kt:27] Processing item 0 with flavor: image/x-java-image
2026-07-06 16:11:10,961 INFO [DefaultDispatcher-worker-14] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:16] preCollect Execution Time: 1 ms
2026-07-06 16:11:10,963 INFO [DefaultDispatcher-worker-13] c.c.p.PasteCollector [LoggerExtension.kt:28] createPrePasteData Execution Time: 2 ms
2026-07-06 16:11:10,969 INFO [DefaultDispatcher-worker-13] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:16] updatePasteData Execution Time: 6 ms
2026-07-06 16:11:10,972 INFO [DefaultDispatcher-worker-13] c.c.p.CurrentPaste [DesktopCurrentPaste.kt:18] Setting current paste id to 1072
2026-07-06 16:11:10,973 INFO [DefaultDispatcher-worker-4] c.c.p.PasteCollector [LoggerExtension.kt:28] completeCollect Execution Time: 4 ms
2026-07-06 16:11:10,973 INFO [DefaultDispatcher-worker-4] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:28] consume Execution Time: 13 ms
2026-07-06 16:11:10,976 DEBUG [DefaultDispatcher-worker-13] c.c.n.PasteClient [PasteClient.kt:40] REQUEST: http://192.168.31.198:13129/sync/paste
METHOD: POST
COMMON HEADERS
-> Accept: application/json
-> Accept-Encoding: identity
-> appInstanceId: 957c7ce7-f8ce-4bee-8f2f-9e9083d7f4bb
-> targetAppInstanceId: BA1AD89B-10F3-5F4B-8B59-434103058C4E
CONTENT HEADERS
-> Content-Length: 619
-> Content-Type: application/json
2026-07-06 16:11:11,002 DEBUG [DefaultDispatcher-worker-17] c.c.p.DesktopTransferableConsumer [TransferableConsumer.kt:27] Processing item 0 with flavor: image/x-java-image
2026-07-06 16:11:11,002 INFO [DefaultDispatcher-worker-17] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:16] preCollect Execution Time: 0 ms
2026-07-06 16:11:11,006 INFO [DefaultDispatcher-worker-17] c.c.p.PasteCollector [LoggerExtension.kt:28] createPrePasteData Execution Time: 4 ms
2026-07-06 16:11:11,011 INFO [DefaultDispatcher-worker-17] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:16] updatePasteData Execution Time: 5 ms
2026-07-06 16:11:11,013 INFO [DefaultDispatcher-worker-17] c.c.p.CurrentPaste [DesktopCurrentPaste.kt:18] Setting current paste id to 1073
2026-07-06 16:11:11,015 INFO [DefaultDispatcher-worker-17] c.c.p.PasteCollector [LoggerExtension.kt:28] completeCollect Execution Time: 4 ms
2026-07-06 16:11:11,015 INFO [DefaultDispatcher-worker-17] c.c.p.DesktopTransferableConsumer [LoggerExtension.kt:28] consume Execution Time: 13 ms
2026-07-06 16:11:11,017 DEBUG [DefaultDispatcher-worker-5] c.c.n.PasteClient [PasteClient.kt:40] REQUEST: http://192.168.31.198:13129/sync/paste

中文

从日志可以看出短时间内(约 40 ms)监听到了两次粘贴板改变,看起来是截图软件设置方设置了两次粘贴板,内容相同。

Mac 粘贴出现两个相同的图片,这个行为因被粘贴软件不同而不同。CrossPaste 为了尽可能兼容更多的软件,图片粘贴板实际上会包含两个并列项:一是图片的内存形式,二是文件路径形式。大多数软件会读取其中任意一种格式呈现粘贴板,但也存在少数软件会读取这两种形式,因此会出现两个图片。我想后续可以新增一个"粘贴板目标控制"的配置,专门设置图片的粘贴形式,避免重复图片。

English

From the log, two clipboard changes were detected within a very short interval (~40 ms), which suggests the screenshot tool itself set the clipboard twice with identical content.

As for two identical images appearing when pasting on Mac: this behavior varies depending on the target application. To stay compatible with as many apps as possible, CrossPaste actually puts two parallel representations on the clipboard for images — one is the in-memory image form, and the other is the file-path form. Most applications read only one of these formats to render the paste, but a few read both, which results in two images. We plan to add a "clipboard target control" setting in the future, allowing users to configure the image paste format specifically and avoid duplicate images.

[guiyanakuang]

复制win一个pdf的文件，mac没有任何操作，但是黏贴了 https://github.com/user-attachments/assets/1b2c409a-e621-422d-b54d-fdde6993e43c

这正是CrossPaste的工作机制，对于大文件我们会直接保存在下载目录，以便用户复用，而不是重复传输，或者保存在数据库中提供给后续粘贴导致冗余。

[CompileFuture2024]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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Copy a pdf file from win. There is no operation on mac, but it is pasted https://github.com/user-attachments/assets/1b2c409a-e621-422d-b54d-fdde6993e43c

This is exactly the working mechanism of CrossPaste. For large files, we will save them directly in the download directory so that users can reuse them, instead of repeatedly transferring them, or saving them in the database for subsequent pasting, causing redundancy.

[xc12550108]

确实复制文字没有任何问题，但截图我用的是win自带的截图快捷键F12。可能是自带软件bug。

[CompileFuture2024]

Bot detected the issue body's language is not English, translate it automatically. 👯👭🏻🧑‍🤝‍🧑👫🧑🏿‍🤝‍🧑🏻👩🏾‍🤝‍👨🏿👬🏿

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There is indeed no problem with copying text, but I use the screenshot shortcut F12 that comes with Windows to take screenshots. It may be a built-in software bug.