<$appear> macro doesn't show correct text when link is clicked.

[bulrush15]

Summary:

No matter how many <$appear> widgets I have in a single tiddler only the text for the last <appear> macro will appear.

My Setup:

• Using TW5.1.21 with refnotes plugin and 'appear' macro plugin.
• Markup is standard TW5 markup.
• Using a TW5 on tiddlyspot.com.
• Using browse Chrome v79 on Windows 7 64-bit.
• I am also using the refnotes plugin to TW5. https://kookma.github.io/Refnotes/

Reproduce problem:

• Create a new tiddler in a TW5 file.
• Use at least 2 <$appear> widgets in the single tiddler, formatted like this:

Before 16 text. 
<$appear show="Click for (16)" type="popup" keep="no">
Message for 16.
</$appear>
After 16 text. 
<$appear show="Click for (17)" type="popup" keep="no">
Message for 17.
</$appear>
After 17 text.

Results:

Click once on each 'appear' link. The correct text for the first item (16) will not be correct. It will be the text for item (17).

This bug doesn't happen if the <$appear> macro is not a popup, like this:

Before 1 text. 
<$appear show="Click for (1)" keep="no">
Message for 1.
</$appear>
After 1 text. 
<$appear show="Click for (2)" keep="no">
Message for 2.
</$appear>
After 2 text.