[kdeplasma-addons] [Bug 488244] New: XKCD comic strip goes into infinite refresh loop

[Sami Kyöstilä]

https://bugs.kde.org/show_bug.cgi?id=488244

            Bug ID: 488244
           Summary: XKCD comic strip goes into infinite refresh loop
    Classification: Plasma
           Product: kdeplasma-addons
           Version: 5.27.10
          Platform: Debian testing
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: Comic
          Assignee: plasma-b...@kde.org
          Reporter: sami.kyost...@gmail.com
  Target Milestone: ---

SUMMARY
The comic strip plasmoid seems to often get to a state where it is refreshing
the comic in a busy loop.

STEPS TO REPRODUCE
1. Add a comic widget with at least two comics since this doesn't seem to
reproduce with just one. (I'm using https://store.kde.org/p/2160754 and
https://store.kde.org/p/1080452)
2. Switch between the comic tabs a few times. Possibly you also need to click
"next" on the latest xkcd strip to trigger the bug. 
3. Observe the plasmashell logs: journalctl -f /usr/bin/plasmashell

OBSERVED RESULT
At some point, the comic widget will start updating xkcd in a busy loop several
times a second:

Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Requesting image for comic 2943
from https://imgs.xkcd.com/comics/unsolved_chemistry_problems.png";
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Received comic image data."
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Requesting data for latest comic
from https://xkcd.com/info.0.json";
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Requesting data for latest comic
from https://xkcd.com/info.0.json";
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Received data from the XKCD API
with ID 257"
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Data parsed successfully:
{\"month\": \"6\", \"num\": 2943, \"link\": \"\", \"year\": \"2024\", \"news\":
\"\", \"safe_title\": \"Unsolved Chemistry Problems\", \"transcript\": \"\",
\"alt\": \"I'm an H\\u207a denier, in that I refuse to consider loose protons
to be real hydrogen, so I personally believe it stands for 'pretend'.\",
\"img\": \"https://imgs.xkcd.com/comics/unsolved_chemistry_problems.png\";,
\"title\": \"Unsolved Chemistry Problems\", \"day\": \"7\"}"
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Requesting data for requested
comic 2942 from https://xkcd.com/2942/info.0.json";
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Received data from the XKCD API
with ID 256"
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Data parsed successfully:
{\"month\": \"6\", \"num\": 2942, \"link\": \"\", \"year\": \"2024\", \"news\":
\"\", \"safe_title\": \"Fluid Speech\", \"transcript\": \"\", \"alt\": \"Thank
you to linguist Gretchen McCulloch for teaching me about phonetic assimilation,
and for teaching me that if you stand around in public reading texts from a
linguist and murmuring example phrases to yourself, people will eventually ask
if you're okay.\", \"img\": \"https://imgs.xkcd.com/comics/fluid_speech.png\";,
\"title\": \"Fluid Speech\", \"day\": \"5\"}"
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Requesting image for comic 2942
from https://imgs.xkcd.com/comics/fluid_speech.png";
Jun 09 17:09:44 kuusnepa plasmashell[3686]: "Received data from the XKCD API
with ID 257"
(etc.)

EXPECTED RESULT
Busy-looping should not happen.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 5.27.11
(available in About System)
KDE Plasma Version: 5.27.11
KDE Frameworks Version: 5.115.0
Qt Version: 5.15.10

ADDITIONAL INFORMATION

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