Error and stack trace in console, during Annotation workload

[danleh]

When running the current https://pspdfkit.com/webassembly-benchmark/ in a recent version of Chrome or Firefox, the console shows the same error message, around 20 times, with a stack trace:

49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12 [Annotation] Could not render annotation: 
c @ 49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12
warn @ 49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12
i @ pspdfkit-8471b8e058b89be0.wasm.js:13
t @ pspdfkit-8471b8e058b89be0.wasm.js:13
$func16618 @ 03241282:0x8a2ac0
$func16615 @ 03241282:0x8a289c
$func2931 @ 03241282:0x103908
$func16608 @ 03241282:0x8a2724
$func191 @ 03241282:0x1185e
$func13092 @ 03241282:0x70c811
$func7698 @ 03241282:0x3ab41f
$func3966 @ 03241282:0x179e89
$func6935 @ 03241282:0x318ed5
$func12396 @ 03241282:0x6b4d6b
$func12398 @ 03241282:0x6b902e
$func8623 @ 03241282:0x442ea4
$func17657 @ 03241282:0x902807
$func17699 @ 03241282:0x9064b1
(anonymous) @ pspdfkit-8471b8e058b89be0.wasm.js:13
be @ 49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12
renderTile @ 49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12
Le.onmessage @ 49fc43a7-9fda-4a3c-95c4-a09aaaab2969:12

Is that intentional? Is this workload still measuring something reasonable?