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TS1648: Design Mode vertical scroll bar disappears in large relations
Category

Pre-Existing Bug

Problem

When working in Design Mode in View by Kind or View by Name mode, the vertical scroll bar becomes flaky or disappears altogether when there is large number of icons in the relation.

Discussion

This is a known bug from older versions of Helix. No problems are seen with 2720 icons or less, but at exactly 2721 icons, the list begins to act flaky, and scrolling at the bottom of the list becomes erratic. At 2731 icons the vertical scroll bar disappears altogether.

However it should be noted that 2700+ icons in a relation is extremely unusual. If you are affected by this bug, you may want to take a hard look at your database design. It may be that you are trying to combine the function of multiple relations into one. Look for multiple fields holding the same data class (e.g. "item#1", "item#2", "item#3", "item#4", etc…). If you have this, you should move the "item" field to another relation and take advantage of the relational capabilities of Helix that show its true power.

Solution

There are two options:

  1. Switch to View by Icon mode. The problem does not manifest in this mode.
  2. Reduce the number of icons to 2720 or less.
Status

This bug is fixed in Helix RADE 6.2.

History

This bug exists in all versions of Helix RADE, Helix Express, and Double Helix prior to Helix RADE 6.2.

Scope

This bug affects all Classic Helix applications with Design Mode.