andreamazz/AMScrollingNavbar

Rendering bug when sliding slowly and navbar is gone

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#241 opened on Apr 6, 2017

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bughelp wanted

Description

Hi, I am experiencing the following bug:

If my navbar is scrolled away and I am slowling sliding to the previous page in stack, the view of the navigationbar behaves weird: http://findpenguins.com/img/AMScrollingNavbar-Bug.png

In this case, there is a tabbar attached to the navbar, but the same phenomenon is also happening without a tabbar, when simply opening a new screen while navbar is gone (just too quickly to take a screenshot).

Just wanted to let you know, also to find out if you guys are experiencing the same problem.

Tobi

Contributor guide

Tech stack
swift
Domain
mobile
Issue type
bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
iOS developmentSwiftUIScrollView and UINavigationBar interaction
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50
Research direction
Investigate the AMScrollingNavbar source code, particularly the scroll view delegate methods and how the navbar visibility is toggled. Look for issues related to interactive pop gesture and slow scrolling. Check the closed PRs or commits that may have addressed similar bugs. The issue describes a rendering glitch when the navbar is hidden and the user slowly slides to the previous page this likely involves the interaction between the custom scrolling navbar and the default UINavigationController transition.