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Post by dpanesso »

I have an issue when viewing the gantt chart on low resolution screens. Whenever I scroll to one side or the other, the dependency lines vanish and comeback. I have attached a video showing the issue as well as a test case.

Lines disappearing.mp4
(25.14 MiB) Downloaded 59 times
test.json
(28.53 KiB) Downloaded 49 times

Post by Maxim Gorkovsky »

Hello.
I tried your dataset on the latest nightly build and I cannot reproduce the issue. Recently we've fixed few issues related to dependency rendering, like this one: https://github.com/bryntum/support/issues/3645
Please try reproducing this on the latest gantt release.


Post by dpanesso »

The issue was reproduced on version 4.3.3, I tried updating to 4.3.6 and the issue still persists


Post by dpanesso »

I also noticed that the issue occurs on Chrome. I tried it on Firefox and it works fine.


Post by Maxim Gorkovsky »

Could you try to make a runnable test case? You can modify one of our demos. As I mentioned, I tried your dataset on basic demo, I used approximately same window size but issue was not reproducible.
Also we would need to know more about your environment: OS, browser version, presense of touch display, window size, page zoom.


Post by dpanesso »

I'm using windows 10, Google Chrome version 97.0.4692.99, no presence of touch display, using a 1920x1080p screen with a 150% page zoom.


Post by dpanesso »

I even tried it on your demo.

Lines disappearing on demo.mp4
(13.43 MiB) Downloaded 55 times

Post by Maxim Gorkovsky »

Reproduced, ticket opened here: https://github.com/bryntum/support/issues/4102 Thank you for report!


Post by Maxim Gorkovsky »

This is a browser issue which is reported to chromium team and apparently fixed in chrome 98.0.4708.0 which is available today
https://bugs.chromium.org/p/chromium/issues/detail?id=1266454


Post by dpanesso »

Tried it on the latest chrome release and the issue is no longer present. Thank you for your support.


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