Always scroll to the bottom on terraform plans preview

[kurochan]

**What happened**:
I have a problem with the feature terraform plans preview.
When I try to scroll back manually to check, it automatically scrolls to the bottom and I cannot check it.

What you expected to happen:
First time, it scrolls to the bottom. But after that, auto-scroll is disabled.

How to reproduce it:

capture.mp4

Environment:

• control-plane version: v0.44.1

[khanhtc1202]

@kurochan Does it happen on this page as well? 👀
https://play.pipecd.dev/deployments/81e31602-c5f0-4154-b86a-8e6fa1703c3b?project=play

[kurochan]

@khanhtc1202 The problem I point out did not occur in the play environment. That's strange 🤔

[khanhtc1202]

TBH, I got this issue sometime, but it's quite weird and hard to reproduce (on dev and locally) 😓 Let me check around that part, but due to it's hard to reproduce, it's quite hard to figure out how to fix.

[kurochan]

I found that this problem only occurs in multi-stage pipelines and when the pipeline is running.

[khanhtc1202]

Oh, if in such case, it's the current spec. Every time the logs (of the stage) are updated, the stage log view will be updated/generated, and auto scroll to the bottom will be triggered. The point is to notify users that a new log has been added. Once the stage is finished, you can scroll wherever you want to.
https://github.com/pipe-cd/pipecd/blob/master/web/src/components/deployments-detail-page/log-viewer/log/index.tsx#L30-L32

[kurochan]

Just to confirm, is it a specification that when the log of a later stage is updated, the scroll in the log of the stage that has already finished is also updated? Seems like unnatural behavior to me 🤔

[khanhtc1202]

In such case, it's not, that would be counted as a bug 👍